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.
INFO
Published Date :
June 26, 2026, 4:29 p.m.
Last Modified :
June 26, 2026, 4:29 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-57231
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update Podman to version 5.8.4 or later.
- Update Podman to version 6.0.0 or later.
- Avoid using container images with empty environment variables.
- Review container environment variable configurations.
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CVE-2026-57231 vulnerability anywhere in the article.