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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-57231

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

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

podman-container-tools podman

  • >= 1.8.1, < 5.8.4affected

References