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

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

not scored

EPSS

• CVE-2026-57231: 0.44% estimated exploitation activity in the next 30 days; percentile 38.01 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

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

Published by the source

24 Sep 2026, 19:40 UTC

Last modified by the source

1 Oct 2026, 20:45 UTC

Source last checked

23 Oct 2026, 22:04 UTC

1. Revision 2 · amended · 24 Oct 2026

   Amended from osv record GO-2026-6594

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-4hq8-gpf5-8p68

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# Patch Next advisory brief: CVE-2026-57231

Advisory: Podman: Malformed Image can trick podman run into leaking host environment variables into the container in github.com/containers/libpod
IDs: CVE-2026-57231, GHSA-4hq8-gpf5-8p68
Record: https://patchnext.com/advisories/cve-2026-57231 (revision 2, source checked 23 Oct 2026, 22:04 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Unrated
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Partial vendor fix; fixed versions by package: github.com/containers/podman/v5 5.8.4; go.podman.io/podman/v6 6.0.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/containers/podman/v5: affected < 5.8.4; fixed in 5.8.4
- Go github.com/containers/podman/v3: affected every version
- Go github.com/containers/libpod: affected >= 1.8.1
- Go github.com/containers/podman: affected every version
- Go github.com/containers/podman/v2: affected every version
- Go go.podman.io/podman/v6: affected < 6.0.0; fixed in 6.0.0
- Go github.com/containers/podman/v4: affected every version

## Suggested inspection (read-only)
- Go github.com/containers/podman/v5: check the installed version with your package manager.
- Go github.com/containers/podman/v3: check the installed version with your package manager.
- Go github.com/containers/libpod: check the installed version with your package manager.
- Go github.com/containers/podman: check the installed version with your package manager.
- Go github.com/containers/podman/v2: check the installed version with your package manager.
- Go go.podman.io/podman/v6: check the installed version with your package manager.
- Go github.com/containers/podman/v4: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/containers/podman/v5, github.com/containers/podman/v3, github.com/containers/libpod, github.com/containers/podman, github.com/containers/podman/v2, go.podman.io/podman/v6, github.com/containers/podman/v4.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GO-2026-6594 (OSV record GO-2026-6594 lists affected ranges: Go github.com/containers/libpod >=1.8.1; Go github.com/containers/podman >=0; Go github.com/containers/podman/v2 >=0; Go github.com/containers/podman/v3 >=0; Go github.com/containers/podman/v4 >=0; Go github.com/containers/podman/v5 >=0 =0 <6.0.0 (fixed))
- Verified: https://osv.dev/vulnerability/GHSA-4hq8-gpf5-8p68 (OSV record GHSA-4hq8-gpf5-8p68 lists affected ranges: Go github.com/containers/podman/v5 >=0 =0 =0 =0 =0 =1.8.1)

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