GHSA-72x6-4j93-7w86Published

BuildKit: Possible runtime DoS via unbounded group parsing

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cve-program · CVE-2026-61712

Published

BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.1, BuildKit read attacker-controlled /etc/passwd and /etc/group files without an upper bound while resolving a username to a user identifier or group identifier in executor/oci/user.go and solver/llbsolver/ops/user_linux.go. A malicious base image or build could provide oversized files that exhausted memory during user resolution and caused out-of-memory termination of the buildkitd process. This issue is fixed in version 0.31.1.

Source published: 19 Aug 2026 20:01:18 UTC
Source modified: 21 Aug 2026 19:04:32 UTC
Saved 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

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CVSS 4.0 · 2.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

euvd · EUVD-2026-62837

Published

Additional publisher context

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: Aug 19, 2026, 8:01:18 PM

dateUpdated: Aug 21, 2026, 7:04:32 PM

2 related source bulletins · separate from aliases

msrc_CVE-2026-61712: BuildKit: Possible runtime DoS via unbounded group parsing

CVE-2026-61712

WID-SEC-W-2026-2111: docker: Mehrere Schwachstellen

CVE-2026-61711 · CVE-2026-61712 · CVE-2026-61801 · CVE-2026-75593

Source published: Aug 19, 2026, 8:01:18 PM (timezone not stated)
Source modified: Aug 21, 2026, 7:04:32 PM (timezone not stated)
Saved here: 14 Nov 2026 07:08:56 UTC
Source terms: ENISA EUVD · source terms and attribution apply

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EUVD CVSS 4.0 · 2.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

nvd · CVE-2026-61712

Published

Additional publisher context

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-770

Original publisher date fields

published: 2026-08-19T20:17:19.730

lastModified: 2026-09-09T21:15:59.613

Source published: 19 Aug 2026 20:17:19 UTC
Source modified: 9 Sep 2026 21:15:59 UTC
Saved here: 25 Oct 2026 14:19:28 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

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CVSS 4.0 · [email protected] · Secondary · 2.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

osv · GHSA-72x6-4j93-7w86

Published

### Impact Maliciously crafted base image or build can cause a Denial of Service (DoS) condition. When creating a container from this image, memory exhaustion occurs, leading to an Out Of Memory (OOM) kill of the buildkitd process. ### Patches Issue is fixed in BuildKit v0.31.1+ ### Workarounds Use trusted build sources. ### References This is BuildKit variant of containerd advisory https://github.com/containerd/containerd/security/advisories/GHSA-jpcc-p29g-p8mq

Source published: 19 Aug 2026 20:24:01 UTC
Source modified: 10 Sep 2026 03:51:13 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

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CVSS_V4 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Publisher rating · LOW

osv · GO-2026-6256

Published

BuildKit has a possible runtime DoS via unbounded group parsing in github.com/moby/buildkit

Source published: 25 Aug 2026 15:00:08 UTC
Source modified: 1 Sep 2026 21:56:10 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

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