CVE-2026-57231Published

Podman: Malformed Image can trick podman run into leaking host environment variables into the container

Collected exploitation and prediction evidence

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-2026-57231

Published

Podman is a tool for managing OCI containers and pods. From 1.8.1 until 5.8.4, a container image that contains a environment variable with just a key and no value can trick podman into passing that variable from the host into the container. This is made worse by the fact that using an asterisk (*) will cause podman to pass all host variables into the container. So essentially a malicious image can exfiltrate all podman environment variables that are set in the session from where the container is launched. This vulnerability is fixed in 5.8.4 and 6.0.0.

Source published: 26 Jun 2026 16:29:02 UTC
Source modified: 27 Jun 2026 02:41:58 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 · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

euvd · EUVD-2026-39807

Published

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: Jun 26, 2026, 4:29:02 PM

dateUpdated: Jun 27, 2026, 2:41:58 AM

20 related source bulletins · separate from aliases

RHSA-2026:63307: Red Hat Security Advisory: Red Hat Quay 3.15.8

CVE-2026-15927 · CVE-2026-18255 · CVE-2026-44705 · CVE-2026-49477 · CVE-2026-56852 · CVE-2026-57231 · CVE-2026-59869 · CVE-2026-67214 · CVE-2026-67313 · CVE-2026-67314 · CVE-2026-67320 · CVE-2026-67321 · CVE-2026-69152 · CVE-2026-69153 · CVE-2026-73086 · CVE-2026-73088 · CVE-2026-73089

WID-SEC-W-2026-2062: Podman: Schwachstelle ermöglicht Offenlegung von Informationen

CVE-2026-57231

RHSA-2026:38504: Red Hat Security Advisory: container-tools:rhel8 security update

CVE-2026-33811 · CVE-2026-39835 · CVE-2026-57231

openSUSE-SU-2026:22089-1: Security update for podman

CVE-2026-55686 · CVE-2026-57231

SUSE-SU-2026:24233-1: Security update for podman

CVE-2026-55686 · CVE-2026-57231

SUSE-SU-2026:24378-1: Security update for podman

CVE-2025-22869 · CVE-2025-47913 · CVE-2025-47914 · CVE-2025-52881 · CVE-2025-6032 · CVE-2025-9566 · CVE-2026-34986 · CVE-2026-39829 · CVE-2026-39830 · CVE-2026-42508 · CVE-2026-55686 · CVE-2026-57231

RHSA-2026:37072: Red Hat Security Advisory: podman security, bug fix, and enhancement update

CVE-2026-25681 · CVE-2026-27136 · CVE-2026-39829 · CVE-2026-39830 · CVE-2026-39832 · CVE-2026-39835 · CVE-2026-42508 · CVE-2026-57231

RHSA-2026:29954: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

CVE-2026-55686 · CVE-2026-57231

RHSA-2026:52968: Red Hat Security Advisory: Red Hat Quay 3.12.21

CVE-2026-13149 · CVE-2026-15927 · CVE-2026-39822 · CVE-2026-42504 · CVE-2026-54058 · CVE-2026-54060 · CVE-2026-55379 · CVE-2026-55380 · CVE-2026-57231 · CVE-2026-59197 · CVE-2026-59199 · CVE-2026-59200 · CVE-2026-59204 · CVE-2026-59205 · CVE-2026-59869 · CVE-2026-59885 · CVE-2026-59886

msrc_CVE-2026-57231: Podman: Malformed Image can trick podman run into leaking host environment variables into the container

CVE-2026-57231

RHSA-2026:69255: Red Hat Security Advisory: Red Hat Quay 3.16.6

CVE-2026-13149 · CVE-2026-15792 · CVE-2026-15927 · CVE-2026-16221 · CVE-2026-18255 · CVE-2026-32283 · CVE-2026-33818 · CVE-2026-39822 · CVE-2026-44705 · CVE-2026-49477 · CVE-2026-54058 · CVE-2026-54060 · CVE-2026-54770 · CVE-2026-55379 · CVE-2026-55380 · CVE-2026-56852 · CVE-2026-56853 · CVE-2026-56858 · CVE-2026-56859 · CVE-2026-56860 · CVE-2026-56862 · CVE-2026-57231 · CVE-2026-59197 · CVE-2026-59199 · CVE-2026-59200 · CVE-2026-59204 · CVE-2026-59205 · CVE-2026-59869 · CVE-2026-59879 · CVE-2026-59885 · CVE-2026-59886 · CVE-2026-67213 · CVE-2026-67214 · CVE-2026-67313 · CVE-2026-67314 · CVE-2026-67320 · CVE-2026-67321 · CVE-2026-69152 · CVE-2026-73086 · CVE-2026-75593 · CVE-2026-82417 · CVE-2026-84375

RHSA-2026:53520: Red Hat Security Advisory: Red Hat Quay 3.10.25

RHSA-2026:54395: Red Hat Security Advisory: Red Hat Quay 3.17.4

CVE-2026-6322 · CVE-2026-9277 · CVE-2026-10143 · CVE-2026-12143 · CVE-2026-13149 · CVE-2026-13676 · CVE-2026-15927 · CVE-2026-39821 · CVE-2026-39828 · CVE-2026-39829 · CVE-2026-39830 · CVE-2026-39831 · CVE-2026-39832 · CVE-2026-39835 · CVE-2026-42508 · CVE-2026-44432 · CVE-2026-44990 · CVE-2026-46597 · CVE-2026-54058 · CVE-2026-54060 · CVE-2026-55379 · CVE-2026-55380 · CVE-2026-57231 · CVE-2026-59197 · CVE-2026-59199 · CVE-2026-59200 · CVE-2026-59204 · CVE-2026-59205 · CVE-2026-59869 · CVE-2026-59885 · CVE-2026-59886 · CVE-2026-73086

SUSE-SU-2026:3662-1: Security update for podman

CVE-2026-55686 · CVE-2026-57231

RHSA-2026:50931: Red Hat Security Advisory: Red Hat Quay 3.9.25

SUSE-SU-2026:23205-1: Security update for podman

CVE-2026-55686 · CVE-2026-57231

RHSA-2026:44232: Red Hat Security Advisory: OpenShift Container Platform 4.22.7 bug fix and security update

CVE-2026-12505 · CVE-2026-43037 · CVE-2026-57231

openSUSE-SU-2026:11437-1: podman-6.0.2-1.1 on GA media

CVE-2026-57231

RHSA-2026:37123: Red Hat Security Advisory: podman security, bug fix, and enhancement update

CVE-2026-25681 · CVE-2026-27136 · CVE-2026-39829 · CVE-2026-39832 · CVE-2026-39835 · CVE-2026-42508 · CVE-2026-57231

RHSA-2026:70267: Red Hat Security Advisory: Red Hat Quay 3.14.9

CVE-2026-4427 · CVE-2026-6322 · CVE-2026-9277 · CVE-2026-10143 · CVE-2026-12143 · CVE-2026-13149 · CVE-2026-13676 · CVE-2026-14257 · CVE-2026-15792 · CVE-2026-15927 · CVE-2026-16221 · CVE-2026-18255 · CVE-2026-32591 · CVE-2026-33747 · CVE-2026-33748 · CVE-2026-33818 · CVE-2026-39820 · CVE-2026-39821 · CVE-2026-39822 · CVE-2026-39828 · CVE-2026-39829 · CVE-2026-39830 · CVE-2026-39831 · CVE-2026-39832 · CVE-2026-39835 · CVE-2026-42151 · CVE-2026-42154 · CVE-2026-42499 · CVE-2026-42504 · CVE-2026-42508 · CVE-2026-44432 · CVE-2026-44486 · CVE-2026-44487 · CVE-2026-44488 · CVE-2026-44492 · CVE-2026-44494 · CVE-2026-44495 · CVE-2026-44496 · CVE-2026-44705 · CVE-2026-44990 · CVE-2026-46595 · CVE-2026-46597 · CVE-2026-48526 · CVE-2026-49477 · CVE-2026-54058 · CVE-2026-54060 · CVE-2026-55379 · CVE-2026-55380 · CVE-2026-56852 · CVE-2026-56853 · CVE-2026-56858 · CVE-2026-56859 · CVE-2026-56860 · CVE-2026-56862 · CVE-2026-57231 · CVE-2026-59197 · CVE-2026-59199 · CVE-2026-59200 · CVE-2026-59204 · CVE-2026-59205 · CVE-2026-59869 · CVE-2026-59885 · CVE-2026-59886 · CVE-2026-67213 · CVE-2026-67214 · CVE-2026-67313 · CVE-2026-67314 · CVE-2026-67320 · CVE-2026-67321 · CVE-2026-69152 · CVE-2026-69153 · CVE-2026-73086 · CVE-2026-73088 · CVE-2026-73089 · CVE-2026-84375

Source published: Jun 26, 2026, 4:29:02 PM (timezone not stated)
Source modified: Jun 27, 2026, 2:41:58 AM (timezone not stated)
Observed here: 7 Nov 2026 12:37:57 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 · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

nvd · CVE-2026-57231

Published

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: Analyzed

Weakness classifications: CWE-200 · CWE-668

Original publisher date fields

published: 2026-06-26T17:16:34.697

lastModified: 2026-10-25T17:10:00.197

2 source CPE criteria · context only

cpe:2.3:a:podman_project:podman:*:*:*:*:*:*:*:*
cpe:2.3:a:podman_project:podman:6.0.0:rc1:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 26 Jun 2026 17:16:34 UTC
Source modified: 25 Oct 2026 17:10:00 UTC
Observed here: 27 Oct 2026 15:15:28 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 · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

osv · GHSA-4hq8-gpf5-8p68

Published

## Summary An container image that contains a environment variable with just a key and no value can trick podman into passing that variable from the host into the container. This is made worse by the fact that using an asterisk (*) will cause podman to pass all host variables into the container. So essentially a malicious image can exfiltrate all podman environment variables that are set in the session from where the container is launched. ## Details podman run allows `--env VAR1` or `--env VAR*` which will read the variable values from the current environment and then passes them into the container. However because the same parsing logic was reused for the image config env section that means that an image variable could also gain access to that. ## Patch That image spec requires the env variables to be in the form of `key=value`, so to address this invalid formatted variables get rejected and the container will not run. Fixed in https://github.com/podman-container-tools/podman/commit/6c431b73dbf8e4b20b778644d7a80caebdb75050 ## Workaround Do not run untrusted images. Before running an image consider inspecting the config with `podman image inspect --format '{{.Config.Env}}' <image>` and check for any variables that do not have a value assigned.

Source published: 24 Sep 2026 19:40:20 UTC
Source modified: 1 Oct 2026 20:55:51 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:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Publisher rating · HIGH

osv · GO-2026-6594

Published

Podman: Malformed Image can trick podman run into leaking host environment variables into the container in github.com/containers/libpod

Source published: 1 Oct 2026 20:23:38 UTC
Source modified: 1 Oct 2026 20:45:15 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.