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Podman Creates Temporary File with Insecure Permissions

High severity GitHub Reviewed Published Sep 16, 2025 to the GitHub Advisory Database • Updated Sep 16, 2025

Package

gomod github.com/containers/podman/v5 (Go)

Affected versions

<= 5.5.0

Patched versions

None

Description

A flaw was found in Podman. In a Containerfile or Podman, data written to RUN --mount=type=bind mounts during the podman build is not discarded. This issue can lead to files created within the container appearing in the temporary build context directory on the host, leaving the created files accessible.

References

Published by the National Vulnerability Database Sep 16, 2025
Published to the GitHub Advisory Database Sep 16, 2025
Reviewed Sep 16, 2025
Last updated Sep 16, 2025

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS score

Weaknesses

Creation of Temporary File With Insecure Permissions

Opening temporary files without appropriate measures or controls can leave the file, its contents and any function that it impacts vulnerable to attack. Learn more on MITRE.

CVE ID

CVE-2025-4953

GHSA ID

GHSA-m68q-4hqr-mc6f

Source code

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