7.4

CVE-2026-75939

Medienbericht

Openshift/oc-mirror: release signature verification: openpgp signatureerror checked before signed body is consumed

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerRed Hat
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Produkt Red Hat OpenShift Container Platform 4
Default Statusunaffected
HerstellerRed Hat
≫
Produkt Red Hat OpenShift Container Platform 4
Default Statusaffected
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.21% 0.113
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
RedHat 7.4 2.2 5.2
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE-347 Improper Verification of Cryptographic Signature

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

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Media Report
05.10.2026 17:13
https://access.redhat.com/security/cve/CVE-2026-75939
https://bugzilla.redhat.com/show_bug.cgi?id=2517976