CVE-2026-75939 (GCVE-0-2026-75939)
Vulnerability from cvelistv5
Published
2026-09-21 14:05
Modified
2026-10-15 19:13
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Summary
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.
References
https://access.redhat.com/errata/RHSA-2026:79039 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-75939 vdb-entry, x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2517976 issue-tracking, x_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat OpenShift Container Platform 4.18 Unaffected: 1790828598   < *
    cpe:/a:redhat:openshift:4.18::el9
Create a notification for this product.
Show details on NVD website


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