Auth bypass in Red Hat Enterprise Linux 10
CVE-2026-80110
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (11.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 12th percentile — 11.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.001
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-80110 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- access.redhat.com/errata/RHSA-2026:73765 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:73766 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:86621 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:86623 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-80110?
- CVE-2026-80110 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Incorrect Authorization. CVSS score: 8.1/10. Published 2026-09-21.
- How severe is CVE-2026-80110?
- High severity. CVSS v3 base score is 8.1 out of 10.