Auth bypass in Red Hat Certificate System 10
CVE-2026-17039
A flaw was found in pki-core. The certificate authority (CA) renewal request path does not perform the realm-based authorization check that the enrollment path performs, allowing an authenticated user entitled to one realm to cause a certificate belonging to a different realm to be renewed without that realm's authorization.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (17.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2021-20179
- access.redhat.com/security/cve/CVE-2026-17039 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- github.com/dogtagpki/pki/blob/master/base/ca/database/ds/acl.ldif
- github.com/dogtagpki/pki/blob/master/base/ca/src/main/java/com/netscape/cms/ser…
- github.com/dogtagpki/pki/blob/master/base/ca/src/main/java/com/netscape/cms/ser…
- github.com/dogtagpki/pki/blob/master/base/ca/src/main/java/org/dogtagpki/server…
- github.com/dogtagpki/pki/commit/e2de26769761af04b9c56071bd1a1926903c49b6
Frequently asked questions
- What is CVE-2026-17039?
- CVE-2026-17039 is a low-severity vulnerability in Red Hat Certificate System 10, classified under Incorrect Authorization. CVSS score: 3.1/10. Published 2026-07-24.
- How severe is CVE-2026-17039?
- Low severity. CVSS v3 base score is 3.1 out of 10.