Information Exposure Affecting container-tools:rhel8/podman package, versions <4:4.9.4-34.module_el8.10.0+4227+f1240cfc


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.31% (24th percentile)

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  • Snyk IDSNYK-ALMALINUX8-CONTAINERTOOLS-17999501
  • published17 Jul 2026
  • disclosed9 Jul 2026

Introduced: 9 Jul 2026

CVE-2026-57231  (opens in a new tab)
CWE-200  (opens in a new tab)
CWE-668  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 container-tools:rhel8/podman to version 4:4.9.4-34.module_el8.10.0+4227+f1240cfc or higher.
This issue was patched in ALSA-2026:38504.

NVD Description

Note: Versions mentioned in the description apply only to the upstream container-tools:rhel8/podman package and not the container-tools:rhel8/podman package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1