Podman Build Context Leakage via RUN --mount=type=bind
CVE-2025-4953 Published on September 16, 2025

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.

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Vulnerability Analysis

CVE-2025-4953 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
HIGH
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
NONE

Weakness Type

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.


Products Associated with CVE-2025-4953

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2025-4953 are published in these products:

Red Hat Enterprise Linux (RHEL)
 
Red Hat Openshift
 
Red Hat Rhivos
 

Exploit Probability

EPSS
0.06%
Percentile
19.75%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.