CVE-2026-75939

CVE Enrichment

CVSS: 7.4 HIGH
EPSS: 0.31%
EPSS Percentile: 22.08%
CISA KEV: Not listed

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: secalert@redhat.com
Published: 21-Sep-2026 22:17
Last Modified: 24-Sep-2026 21:18
EPSS Date: 2026-10-11
CWE: CWE-347

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:H /
                            PR:N /
                            UI:N /
                            S:U /
                            C:H /
                            I:H /
                            A:N

References

Last enrichment sync: 12-Oct-2026 05:15
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

CVE-2026-65121, CVE-2026-65130 (NVIDIA), CVE-2026-74849 (ManageEngine ADSelfService Plus), CVE-2026-75939 (Red Hat OpenShift), GHSA-632h-h47v-g4x4 (OpenCode), CVE-2026-91765 (PHP), CVE-2026-96760 (Authlib), Weekly Security Recap: Exploited Citrix NetScaler Flaw and Dozens of Vulnerabilities

CVE (135)

Vendors (1)

Products (2)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.