Environment Variable Exposure in Podman Tool by Red Hat
CVE-2026-57231

7.5HIGH

Key Information:

Vendor

Podman-container-tools

Status
Podman
Vendor
CVE Published:
26 June 2026

What is CVE-2026-57231?

An environment variable vulnerability in Podman allows a malicious container image to exfiltrate sensitive host variables. If the image contains an environment variable with a key and no value, it can trick Podman into passing host variables to the container. This issue is exacerbated when the asterisk (*) wildcard is used, enabling the transmission of all environment variables from the host. Users are advised to upgrade to Podman version 5.8.4 or 6.0.0 to mitigate this risk.

Affected Version(s)

podman >= 1.8.1, < 5.8.4

References

https://github.com/podman-container-tools/podman/security...
x_refsource_CONFIRM
https://github.com/podman-container-tools/podman/commit/6...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.