What is GHSA-w9c6-w29v-4vp6?

GHSA-w9c6-w29v-4vp6 is a security advisory published by GitHub Security Advisories with Critical severity. A flaw was found in the managedcluster-import-controller. The Certificate Signing Request (CSR)...

Which CVE IDs does GHSA-w9c6-w29v-4vp6 cover?

GHSA-w9c6-w29v-4vp6 covers the following CVE IDs: CVE-2026-66795. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-w9c6-w29v-4vp6?

GHSA-w9c6-w29v-4vp6 has a CVSS v3 base score of 9.1, published by GitHub Security Advisories.

GHSA-w9c6-w29v-4vp6CriticalCVSS 9.1

A flaw was found in the managedcluster-import-controller. The Certificate Signing Request (CSR)...

Vendor

GitHub Security Advisories

Published

August 17, 2026

Last Modified

August 17, 2026

🔗 CVE IDs covered (1)

CVE-2026-66795 →

📋 Description

A flaw was found in the managedcluster-import-controller. The Certificate Signing Request (CSR) auto-approval logic improperly validates incoming CSRs, specifically by not inspecting the signer name or decoding the PEM-encoded x509 CSR. This vulnerability allows a privileged service account on a spoke cluster to submit a malicious CSR. Successful exploitation can lead to privilege escalation, enabling the attacker to obtain administrative credentials on the hub cluster.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-66795
https://access.redhat.com/security/cve/CVE-2026-66795
https://bugzilla.redhat.com/show_bug.cgi?id=2507540
https://github.com/advisories/GHSA-w9c6-w29v-4vp6