CVE-2026-61801ModerateLocalRevised 7 Nov

github.com/moby/sys/user has a possible DoS via unbounded parsing of user and group database files

MSRC advisory NVD CVE.org

Assessment

Severity: Moderate
CVSS base score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Impact: Not stated
EPSS · 30-day forecast: No EPSS score collected
Public detection template: No Nuclei template is listed in the current collected catalog
Exploitation detected: Unknown: not stated by MSRC
Exploitability: Not assessed
Publicly disclosed: Unknown: not stated by MSRC
Customer action: Required: follow the MSRC remediation guidance
Component: Mariner
Weakness: CWE-400: Uncontrolled Resource Consumption
Issued by: GitHub_M
Published: 11 Oct 2026 · October 2026
Last revised: 7 Nov 2026Information published.

CVSS 3.1 base metricsRed raises the risk · green lowers it

Attack vector: LocalAV:L
Attack complexity: LowAC:L
Privileges required: LowPR:L
User interaction: NoneUI:N
Scope: UnchangedS:U
Confidentiality: NoneC:N
Integrity: NoneI:N
Availability: HighA:H

Updates that fix it

0 KBs

No KB listed

No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.

Affected products

Open Source Software

15 affected products

azl3 containerd2 2.3.4-1 on Azure Linux 3.0
azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0
azl3 docker-compose 2.27.0-14 on Azure Linux 3.0
azl3 kata-containers 4.1.0.kata0-1 on Azure Linux 3.0
azl3 kata-containers 4.1.0.kata1-2 on Azure Linux 3.0
azl3 kata-containers-cc 3.15.0.aks0-21 on Azure Linux 3.0
azl3 kata-containers-cc 3.15.0.aks0-23 on Azure Linux 3.0
azl3 kubernetes 1.30.10-30 on Azure Linux 3.0
azl3 kubernetes 1.30.10-32 on Azure Linux 3.0
azl3 kubevirt 1.8.4-2 on Azure Linux 3.0
azl3 moby-engine 25.0.3-20 on Azure Linux 3.0
azl3 runc 1.4.3-1 on Azure Linux 3.0
azl3 runc 1.4.3-2 on Azure Linux 3.0
azl3 skopeo 1.14.4-13 on Azure Linux 3.0
azl3 telegraf 1.31.0-33 on Azure Linux 3.0

What changed

Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
6 Nov 2026 · 17:32:22 UTC
Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
6 Nov 2026 · 16:31:02 UTC
Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
2 Nov 2026 · 17:30:39 UTC
Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
2 Nov 2026 · 16:27:39 UTC
Affected products: azl3 containerd2 2.3.4-1 on Azure Linux 3.0, azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0, azl3 docker-compose 2.27.0-14 on Azure Linux 3.0, azl3 kata-containers 4.1.0.kata0-1 on Azure Linux 3.0, azl3 kata-containers-cc 3.15.0.aks0-21 on Azure Linux 3.0, azl3 kubernetes 1.30.10-30 on Azure Linux 3.0, azl3 kubevirt 1.8.4-2 on Azure Linux 3.0, azl3 moby-engine 25.0.3-20 on Azure Linux 3.0, azl3 runc 1.4.3-1 on Azure Linux 3.0, azl3 skopeo 1.14.4-13 on Azure Linux 3.0, azl3 telegraf 1.31.0-33 on Azure Linux 3.0 → azl3 containerd2 2.3.4-1 on Azure Linux 3.0, azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0, azl3 docker-compose 2.27.0-14 on Azure Linux 3.0, azl3 kata-containers 4.1.0.kata0-1 on Azure Linux 3.0, azl3 kata-containers 4.1.0.kata1-2 on Azure Linux 3.0, azl3 kata-containers-cc 3.15.0.aks0-21 on Azure Linux 3.0, azl3 kata-containers-cc 3.15.0.aks0-23 on Azure Linux 3.0, azl3 kubernetes 1.30.10-30 on Azure Linux 3.0, azl3 kubernetes 1.30.10-32 on Azure Linux 3.0, azl3 kubevirt 1.8.4-2 on Azure Linux 3.0, azl3 moby-engine 25.0.3-20 on Azure Linux 3.0, azl3 runc 1.4.3-1 on Azure Linux 3.0, azl3 runc 1.4.3-2 on Azure Linux 3.0, azl3 skopeo 1.14.4-13 on Azure Linux 3.0, azl3 telegraf 1.31.0-33 on Azure Linux 3.0
2 Nov 2026 · 09:04:36 UTC
Detection template: No Nuclei template listed · Customer action: Required: apply the update → Required: follow the MSRC remediation guidance · Public disclosure: No → Unknown: not stated by MSRC · Exploitation detected: Not reported by MSRC → Unknown: not stated by MSRC
29 Oct 2026
Affected products: azl3 containerd2 2.3.4-1 on Azure Linux 3.0, azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0, azl3 docker-compose 2.27.0-14 on Azure Linux 3.0, azl3 httpd 2.4.68-1 on Azure Linux 3.0, azl3 kata-containers 4.1.0.kata0-1 on Azure Linux 3.0, azl3 kata-containers-cc 3.15.0.aks0-21 on Azure Linux 3.0, azl3 kubernetes 1.30.10-30 on Azure Linux 3.0, azl3 kubevirt 1.8.4-2 on Azure Linux 3.0, azl3 moby-engine 25.0.3-20 on Azure Linux 3.0, azl3 skopeo 1.14.4-13 on Azure Linux 3.0, azl3 telegraf 1.31.0-33 on Azure Linux 3.0 → azl3 containerd2 2.3.4-1 on Azure Linux 3.0, azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0, azl3 docker-compose 2.27.0-14 on Azure Linux 3.0, azl3 kata-containers 4.1.0.kata0-1 on Azure Linux 3.0, azl3 kata-containers-cc 3.15.0.aks0-21 on Azure Linux 3.0, azl3 kubernetes 1.30.10-30 on Azure Linux 3.0, azl3 kubevirt 1.8.4-2 on Azure Linux 3.0, azl3 moby-engine 25.0.3-20 on Azure Linux 3.0, azl3 runc 1.4.3-1 on Azure Linux 3.0, azl3 skopeo 1.14.4-13 on Azure Linux 3.0, azl3 telegraf 1.31.0-33 on Azure Linux 3.0
26 Oct 2026
Detection template: Unknown: exploit-code evidence is incomplete or retained → No Nuclei template listed · CISA KEV: Unknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
23 Oct 2026 · 09:33:49 UTC
Detection template: No Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained · CISA KEV: Not listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
23 Oct 2026 · 08:31:50 UTC
Affected products: azl3 containerd2 2.3.4-1 on Azure Linux 3.0, azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0, azl3 docker-buildx 0.14.0-17 on Azure Linux 3.0, azl3 docker-cli 25.0.7-5 on Azure Linux 3.0, azl3 docker-compose 2.27.0-14 on Azure Linux 3.0, azl3 httpd 2.4.68-1 on Azure Linux 3.0, azl3 kata-containers 4.1.0.kata0-1 on Azure Linux 3.0, azl3 kata-containers-cc 3.15.0.aks0-21 on Azure Linux 3.0, azl3 kubernetes 1.30.10-30 on Azure Linux 3.0, azl3 kubevirt 1.8.4-2 on Azure Linux 3.0, azl3 libcontainers-common 20240213-3 on Azure Linux 3.0, azl3 moby-engine 25.0.3-20 on Azure Linux 3.0, azl3 skopeo 1.14.4-13 on Azure Linux 3.0, azl3 telegraf 1.31.0-33 on Azure Linux 3.0 → azl3 containerd2 2.3.4-1 on Azure Linux 3.0, azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0, azl3 docker-compose 2.27.0-14 on Azure Linux 3.0, azl3 httpd 2.4.68-1 on Azure Linux 3.0, azl3 kata-containers 4.1.0.kata0-1 on Azure Linux 3.0, azl3 kata-containers-cc 3.15.0.aks0-21 on Azure Linux 3.0, azl3 kubernetes 1.30.10-30 on Azure Linux 3.0, azl3 kubevirt 1.8.4-2 on Azure Linux 3.0, azl3 moby-engine 25.0.3-20 on Azure Linux 3.0, azl3 skopeo 1.14.4-13 on Azure Linux 3.0, azl3 telegraf 1.31.0-33 on Azure Linux 3.0
16 Oct 2026

Page history

Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.

Cite this version

Field-level log (46)

Up to 100 recent field edits are shown; older edits may be outside retention.

7 Nov 2026 · 08:59:22 UTC Last revised2 Nov 2026 01:46 UTC → 7 Nov 2026 01:48 UTC
6 Nov 2026 · 17:32:22 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
6 Nov 2026 · 17:32:22 UTC Source coverage: public-exploit-codeIncomplete → Current
6 Nov 2026 · 17:32:22 UTC Source coverage: first-epssIncomplete → Current
6 Nov 2026 · 17:32:22 UTC Source coverage: msrc-cvrfIncomplete → Current
6 Nov 2026 · 16:31:02 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
6 Nov 2026 · 16:31:02 UTC Source coverage: public-exploit-codeCurrent → Incomplete
6 Nov 2026 · 16:31:02 UTC Source coverage: first-epssCurrent → Incomplete
6 Nov 2026 · 16:31:02 UTC Source coverage: msrc-cvrfCurrent → Incomplete
2 Nov 2026 · 17:30:39 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
2 Nov 2026 · 17:30:39 UTC Source coverage: public-exploit-codeIncomplete → Current
2 Nov 2026 · 17:30:39 UTC Source coverage: first-epssIncomplete → Current
2 Nov 2026 · 17:30:39 UTC Source coverage: msrc-cvrfIncomplete → Current
2 Nov 2026 · 16:27:39 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
2 Nov 2026 · 16:27:39 UTC Source coverage: public-exploit-codeCurrent → Incomplete
2 Nov 2026 · 16:27:39 UTC Source coverage: first-epssCurrent → Incomplete
2 Nov 2026 · 16:27:39 UTC Source coverage: msrc-cvrfCurrent → Incomplete
2 Nov 2026 · 09:04:36 UTC Last revised31 Oct 2026 14:45 UTC → 2 Nov 2026 01:46 UTC
2 Nov 2026 · 09:04:36 UTC Affected productsazl3 containerd2 2.3.4-1 on Azure Linux 3.0, azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0, azl3 docker-compose 2.27.0-14 on Azure Linux 3.0, azl3 kata-containers 4.1.0.kata0-1 on Azure Linux 3.0, azl3 kata-containers-cc 3.15.0.aks0-21 on Azure Linux 3.0, azl3 kubernetes 1.30.10-30 on Azure Linux 3.0, azl3 kubevirt 1.8.4-2 on Azure Linux 3.0, azl3 moby-engine 25.0.3-20 on Azure Linux 3.0, azl3 runc 1.4.3-1 on Azure Linux 3.0, azl3 skopeo 1.14.4-13 on Azure Linux 3.0, azl3 telegraf 1.31.0-33 on Azure Linux 3.0 → azl3 containerd2 2.3.4-1 on Azure Linux 3.0, azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0, azl3 docker-compose 2.27.0-14 on Azure Linux 3.0, azl3 kata-containers 4.1.0.kata0-1 on Azure Linux 3.0, azl3 kata-containers 4.1.0.kata1-2 on Azure Linux 3.0, azl3 kata-containers-cc 3.15.0.aks0-21 on Azure Linux 3.0, azl3 kata-containers-cc 3.15.0.aks0-23 on Azure Linux 3.0, azl3 kubernetes 1.30.10-30 on Azure Linux 3.0, azl3 kubernetes 1.30.10-32 on Azure Linux 3.0, azl3 kubevirt 1.8.4-2 on Azure Linux 3.0, azl3 moby-engine 25.0.3-20 on Azure Linux 3.0, azl3 runc 1.4.3-1 on Azure Linux 3.0, azl3 runc 1.4.3-2 on Azure Linux 3.0, azl3 skopeo 1.14.4-13 on Azure Linux 3.0, azl3 telegraf 1.31.0-33 on Azure Linux 3.0
1 Nov 2026 · 07:59:15 UTC Last revised21 Oct 2026 01:43 UTC → 31 Oct 2026 14:45 UTC
29 Oct 2026 · 20:19:26 UTC Public detection templateNo Nuclei template listed
29 Oct 2026 · 20:19:26 UTC EPSSNot scored → No EPSS score collected
29 Oct 2026 · 20:19:26 UTC Customer actionRequired: apply the update → Required: follow the MSRC remediation guidance
29 Oct 2026 · 20:19:26 UTC Publicly disclosedNo → Unknown: not stated by MSRC
29 Oct 2026 · 20:19:26 UTC Exploitation detectedNot reported by MSRC → Unknown: not stated by MSRC
26 Oct 2026 · 07:26:10 UTC Affected productsazl3 containerd2 2.3.4-1 on Azure Linux 3.0, azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0, azl3 docker-compose 2.27.0-14 on Azure Linux 3.0, azl3 httpd 2.4.68-1 on Azure Linux 3.0, azl3 kata-containers 4.1.0.kata0-1 on Azure Linux 3.0, azl3 kata-containers-cc 3.15.0.aks0-21 on Azure Linux 3.0, azl3 kubernetes 1.30.10-30 on Azure Linux 3.0, azl3 kubevirt 1.8.4-2 on Azure Linux 3.0, azl3 moby-engine 25.0.3-20 on Azure Linux 3.0, azl3 skopeo 1.14.4-13 on Azure Linux 3.0, azl3 telegraf 1.31.0-33 on Azure Linux 3.0 → azl3 containerd2 2.3.4-1 on Azure Linux 3.0, azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0, azl3 docker-compose 2.27.0-14 on Azure Linux 3.0, azl3 kata-containers 4.1.0.kata0-1 on Azure Linux 3.0, azl3 kata-containers-cc 3.15.0.aks0-21 on Azure Linux 3.0, azl3 kubernetes 1.30.10-30 on Azure Linux 3.0, azl3 kubevirt 1.8.4-2 on Azure Linux 3.0, azl3 moby-engine 25.0.3-20 on Azure Linux 3.0, azl3 runc 1.4.3-1 on Azure Linux 3.0, azl3 skopeo 1.14.4-13 on Azure Linux 3.0, azl3 telegraf 1.31.0-33 on Azure Linux 3.0
23 Oct 2026 · 09:33:49 UTC Public exploit codeUnknown: exploit-code evidence is incomplete or retained → No Nuclei template listed
23 Oct 2026 · 09:33:49 UTC CISA KEVUnknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
23 Oct 2026 · 09:33:49 UTC Source coverage: public-exploit-codeIncomplete → Current
23 Oct 2026 · 09:33:49 UTC Source coverage: first-epssIncomplete → Current
23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
23 Oct 2026 · 09:33:49 UTC Source coverage: msrc-cvrfIncomplete → Current
23 Oct 2026 · 08:31:50 UTC Public exploit codeNo Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained
23 Oct 2026 · 08:31:50 UTC CISA KEVNot listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
23 Oct 2026 · 08:31:50 UTC Source coverage: public-exploit-codeCurrent → Incomplete
23 Oct 2026 · 08:31:50 UTC Source coverage: first-epssCurrent → Incomplete
23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete
23 Oct 2026 · 08:31:50 UTC Source coverage: msrc-cvrfCurrent → Incomplete
21 Oct 2026 · 07:25:48 UTC Last revised18 Oct 2026 01:46 UTC → 21 Oct 2026 01:43 UTC
18 Oct 2026 · 14:54:30 UTC Link: October 2026/security?release=2026-Oct#cves
18 Oct 2026 · 07:55:05 UTC Last revised17 Oct 2026 01:48 UTC → 18 Oct 2026 01:46 UTC
17 Oct 2026 · 07:28:24 UTC Last revised16 Oct 2026 01:51 UTC → 17 Oct 2026 01:48 UTC
16 Oct 2026 · 07:41:54 UTC Last revised14 Oct 2026 15:17 UTC → 16 Oct 2026 01:51 UTC
16 Oct 2026 · 07:41:54 UTC Affected productsazl3 containerd2 2.3.4-1 on Azure Linux 3.0, azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0, azl3 docker-buildx 0.14.0-17 on Azure Linux 3.0, azl3 docker-cli 25.0.7-5 on Azure Linux 3.0, azl3 docker-compose 2.27.0-14 on Azure Linux 3.0, azl3 httpd 2.4.68-1 on Azure Linux 3.0, azl3 kata-containers 4.1.0.kata0-1 on Azure Linux 3.0, azl3 kata-containers-cc 3.15.0.aks0-21 on Azure Linux 3.0, azl3 kubernetes 1.30.10-30 on Azure Linux 3.0, azl3 kubevirt 1.8.4-2 on Azure Linux 3.0, azl3 libcontainers-common 20240213-3 on Azure Linux 3.0, azl3 moby-engine 25.0.3-20 on Azure Linux 3.0, azl3 skopeo 1.14.4-13 on Azure Linux 3.0, azl3 telegraf 1.31.0-33 on Azure Linux 3.0 → azl3 containerd2 2.3.4-1 on Azure Linux 3.0, azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0, azl3 docker-compose 2.27.0-14 on Azure Linux 3.0, azl3 httpd 2.4.68-1 on Azure Linux 3.0, azl3 kata-containers 4.1.0.kata0-1 on Azure Linux 3.0, azl3 kata-containers-cc 3.15.0.aks0-21 on Azure Linux 3.0, azl3 kubernetes 1.30.10-30 on Azure Linux 3.0, azl3 kubevirt 1.8.4-2 on Azure Linux 3.0, azl3 moby-engine 25.0.3-20 on Azure Linux 3.0, azl3 skopeo 1.14.4-13 on Azure Linux 3.0, azl3 telegraf 1.31.0-33 on Azure Linux 3.0
15 Oct 2026 · 07:14:54 UTC Last revised13 Oct 2026 02:43 UTC → 14 Oct 2026 15:17 UTC
14 Oct 2026 · 11:22:42 UTC Source coverage: msrc-cvrfIncomplete → Current

Explore global source statements, affected packages and advisory history for CVE-2026-61801. The catalog has a separate collection scope from Microsoft release records.

Collected exploitation and prediction evidence

Risk source coverage

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

cve-program · CVE-2026-61801

Published

github.com/moby/sys/user has a possible DoS via unbounded parsing of user and group database files

The `github.com/moby/sys/user` package provides Go utilities for parsing and looking up entries in Unix-style user and group database files. Versions before 0.4.1 do not sufficiently limit entries when parsing `/etc/passwd`- or `/etc/group`-style files, allowing an attacker who can supply a specially crafted file to cause excessive memory consumption and potentially terminate the affected process due to an out-of-memory condition. This issue is patched in version 0.4.1. As a workaround, avoid parsing attacker-controlled user or group database files, or validate and limit untrusted input before parsing it.

Source published: 8 Oct 2026 16:22:25 UTC
Source modified: 8 Oct 2026 17:27:37 UTC
Observed here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

euvd · EUVD-2026-95094

Published

The `github.com/moby/sys/user` package provides Go utilities for parsing and looking up entries in Unix-style user and group database files. Versions before 0.4.1 do not sufficiently limit entries when parsing `/etc/passwd`- or `/etc/group`…

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Oct 8, 2026, 4:22:25 PM

dateUpdated: Oct 8, 2026, 5:27:37 PM

8 related source bulletins · separate from aliases

SUSE-SU-2026:24374-1: Security update for google-osconfig-agent

CVE-2026-61801 · CVE-2026-78669 · CVE-2026-95838

RHSA-2026:76448: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

CVE-2024-24786 · CVE-2026-13719 · CVE-2026-13720 · CVE-2026-56851 · CVE-2026-61801 · CVE-2026-81841 · CVE-2026-97394 · CVE-2026-101899

RHSA-2026:76677: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

CVE-2024-24786 · CVE-2026-56851 · CVE-2026-61801 · CVE-2026-95502 · CVE-2026-97394 · CVE-2026-100347 · CVE-2026-100348 · CVE-2026-100349 · CVE-2026-100350 · CVE-2026-100351 · CVE-2026-101899 · CVE-2026-109855

openSUSE-SU-2026:12260-1: buildpacks-cli-0.40.10-1.1 on GA media

CVE-2026-111943 · CVE-2026-17106 · CVE-2026-61801 · CVE-2026-78659 · CVE-2026-78662

openSUSE-SU-2026:12235-1: containerized-data-importer1.65-api-1.65.0-4.1 on GA media

CVE-2026-61801 · CVE-2026-78659 · CVE-2026-78660 · CVE-2026-78669 · CVE-2026-84445

RHSA-2026:76430: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

CVE-2024-24786 · CVE-2026-13719 · CVE-2026-13720 · CVE-2026-56851 · CVE-2026-61801 · CVE-2026-76154 · CVE-2026-81841 · CVE-2026-97394 · CVE-2026-101899

openSUSE-SU-2026:12152-1: google-osconfig-agent-20261015.00-1.1 on GA media

CVE-2026-61801 · CVE-2026-78669 · CVE-2026-95838

msrc_CVE-2026-61801: github.com/moby/sys/user has a possible DoS via unbounded parsing of user and group database files

CVE-2026-61801

Source published: Oct 8, 2026, 4:22:25 PM (timezone not stated)
Source modified: Oct 8, 2026, 5:27:37 PM (timezone not stated)
Observed here: 7 Nov 2026 13:27:15 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 3.1 · 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd · CVE-2026-61801

Published

The `github.com/moby/sys/user` package provides Go utilities for parsing and looking up entries in Unix-style user and group database files. Versions before 0.4.1 do not sufficiently limit entries when parsing `/etc/passwd`- or `/etc/group`…

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Deferred

Weakness classifications: CWE-400

Original publisher date fields

published: 2026-10-08T17:17:17.433

lastModified: 2026-10-08T21:35:53.890

Source published: 8 Oct 2026 17:17:17 UTC
Source modified: 8 Oct 2026 21:35:53 UTC
Observed here: 25 Oct 2026 14:19:28 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · [email protected] · Secondary · 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv · GHSA-mjcv-p78q-w5fw

Published

github.com/moby/sys/user has a possible DoS via unbounded parsing of user and group database files

A denial-of-service (DoS) vulnerability exists in `github.com/moby/sys/user` before v0.4.1 when parsing specially crafted user or group database files. An attacker able to supply a malicious `/etc/passwd` or `/etc/group`-style file may cause excessive memory consumption, potentially resulting in process termination due to Out Of Memory (OOM) conditions. This issue is related to containerd [CVE-2026-47262] / [GHSA-jpcc-p29g-p8mq](https://github.com/containerd/containerd/security/advisories/GHSA-jpcc-p29g-p8mq), which describes one practical exploitation path through processing untrusted container image content. Applications using `github.com/moby/sys/user` to parse untrusted user or group database files may be similarly affected. ### Impact `github.com/moby/sys/user` versions before v0.4.1 do not place sufficient limits on entries while parsing user and group database files. A specially crafted file may cause excessive memory consumption, potentially leading to process termination due to Out Of Memory (OOM) conditions. Applications that use `github.com/moby/sys/user` to parse user-supplied or otherwise untrusted `/etc/passwd` or `/etc/group` files may be affected. The severity depends on whether an attacker can influence the contents of files being parsed. ### Patches This issue is fixed in `github.com/moby/sys/user` v0.4.1. Users should upgrade to v0.4.1 or later. ### Workarounds Avoid parsing attacker-controlled `/etc/passwd` or `/etc/group`-style files with affected versions of `github.com/moby/sys/user`. Applications that must process untrusted user or group database files should validate and limit accepted input before parsing. Upgrading to v0.4.1 or later is the recommended remediation. ### References * containerd CVE-2026-47262 / GHSA-jpcc-p29g-p8mq: https://github.com/containerd/containerd/security/advisories/GHSA-jpcc-p29g-p8mq * Fix in `github.com/moby/sys/user`: https://github.com/moby/sys/user/commit/210d32ba2bcb4544ee968c7f31249fe59796e60b

Source published: 8 Oct 2026 16:08:33 UTC
Source modified: 19 Oct 2026 21:40:47 UTC
Observed here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V3 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Publisher rating · MODERATE

osv · GO-2026-6686

Published

Possible DoS via unbounded parsing of user and group database files in github.com/moby/sys/user

Source published: 19 Oct 2026 21:08:21 UTC
Source modified: 19 Oct 2026 21:31:35 UTC
Observed here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · OSV · upstream source license applies. Source text is retained; field grouping and change labels are provided by ChangeIntel.