CVE-2026-57231

HIGH

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

Title source: cna
STIX 2.1

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.

References (2)

Core 2

Scores

CVSS v3 7.5
EPSS 0.0031
EPSS Percentile 23.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-200 CWE-668
Status published
Products (3)
podman-container-tools/podman >= 1.8.1, < 5.8.4
podman_project/podman 6.0.0 rc1
podman_project/podman 1.8.1 - 5.8.4
Published Jun 26, 2026
Tracked Since Jun 26, 2026