CVE-2026-80110: Red Hat Certificate System 9

High severity, CVSS 8.1. EPSS: 0.2% chance of exploitation in the next 30 days.

A flaw was found in pki-core. The v2 REST ACL filter selects a tie-breaking permission for colliding literal and wildcard ACL keys using lexicographic string comparison rather than specificity, causing a wildcard-mapped permission to override a more specific literal-mapped permission when both match. In the CA's profile-management REST API this allows a request to POST /v2/profiles/raw -- intended to require Administrator-level profiles.create permission -- to instead be authorized under the lower-privileged profiles.approve permission held by the default Certificate Manager Agents group. The highest threat from this vulnerability is to confidentiality and integrity of the certificate authority's issuance policy.

Affected products

• Red Hat Red Hat Certificate System 9
• Red Hat Red Hat Enterprise Linux 10: before 0:11.9.0-5.el10_2 (fixed in 0:11.9.0-5.el10_2)
• Red Hat Red Hat Enterprise Linux 6
• Red Hat Red Hat Enterprise Linux 7
• Red Hat Red Hat Enterprise Linux 8
• Red Hat Red Hat Enterprise Linux 9: before 0:11.7.1-2.el9_8 (fixed in 0:11.7.1-2.el9_8)

Published 2026-09-21. Last modified 2026-09-30.