CVE-2026-75939

Description

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.

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Produits concernés

• Red Hat OpenShift Container Platform 4.18
• Red Hat OpenShift Container Platform 4

Scores CVSS

Faiblesses (CWE)

• CWE-347

Références

• https://access.redhat.com/errata/RHSA-2026:79039
• https://access.redhat.com/security/cve/CVE-2026-75939
• https://bugzilla.redhat.com/show_bug.cgi?id=2517976

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories