CVE-2026-57231
Podman: Malformed Image can trick podman run into leaking host environment variables into the container
HIGH 7.5
At a glance
- Source
- NVD
- EPSS
- EPSS 0.44 % · percentile 38 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Analyzed
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.
Weaknesses (CWE)
- CWE-200 — Exposure of Sensitive Information to an Unauthorized Actor
- CWE-668 — Exposure of Resource to Wrong Sphere
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | GitHub_M |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | NVD · security-advisories@github.com (Secondary) |
Advisories
- GHSA-4hq8-gpf5-8p68 — Podman: Malformed Image can trick podman run into leaking host environment variables into the container
- GO-2026-6594 — Podman: Malformed Image can trick podman run into leaking host environment variables into the container in github.com/containers/libpod
European references
- ENISA EUVD · EUVD-2026-39807
- GCVE · GCVE-0-2026-57231
CERT-FR advisories
- CERTFR-2026-AVI-0955 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:podman_project:podman:*:*:*:*:*:*:*:*≥ 1.8.1 < 5.8.4cpe:2.3:a:podman_project:podman:6.0.0:rc1:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| podman-container-tools · podman | affected >= 1.8.1, < 5.8.4 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |