Improper Verification of Cryptographic Signature Affecting openshift4/oc-mirror-plugin-rhel9 package, versions *


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.38% (31st percentile)

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  • Snyk IDSNYK-RHEL9-OPENSHIFT4OCMIRRORPLUGINRHEL9-20044539
  • published22 Sept 2026
  • disclosed21 Sept 2026

Introduced: 21 Sep 2026

NewCVE-2026-75939  (opens in a new tab)
CWE-347  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:9 openshift4/oc-mirror-plugin-rhel9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openshift4/oc-mirror-plugin-rhel9 package and not the openshift4/oc-mirror-plugin-rhel9 package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

A flaw was found in openshift/oc-mirror. The tool incorrectly verifies PGP (Pretty Good Privacy) release image signatures by checking for signature errors before the entire signed body is processed, leading to a bypass of the signature verification. A remote attacker, by intercepting or manipulating network traffic to the signature endpoint, could exploit this to craft a PGP message with a valid Red Hat release key ID but a forged signature. This enables the oc-mirror tool to accept and mirror a malicious release payload into a disconnected registry, potentially compromising the integrity of software deployments.

CVSS Base Scores

version 3.1