Riskcovery

CVE-2026-57231

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

State
Published
Severity
7.5 High
Published
Jun 26, 2026
Updated
Jun 27, 2026
Reserved
Jun 24, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NGitHub_M

Weaknesses

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-668 Exposure of Resource to Wrong Sphere

Affected Products

ProductVersions
podmanpodman-container-tools
  • >= 1.8.1, < 5.8.4Affected

References

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