CVE-2026-18047
Dogtag-pki: pki-core: redhat-pki: pki: acme admin enable/disable endpoint authentication bypass via trailing slash
- State
- Published
- Severity
- 6.5 Medium
- Published
- Jul 28, 2026
- Updated
- Jul 28, 2026
- Reserved
- Jul 28, 2026
Description
A flaw was found in Dogtag PKI's ACME responder where the web.xml security constraints use exact URL pattern matching for admin-only enable/disable endpoints. By appending a trailing slash to the URL, an unauthenticated attacker can bypass the Tomcat authentication constraint while RESTEasy still routes the request to the handler, allowing unauthorized toggling of the ACME service state including persistent denial of service.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L | redhat |
Weaknesses
- CWE-288 Authentication Bypass Using an Alternate Path or Channel
Affected Products
| Product | Versions |
|---|---|
Red Hat Certificate System 10Red Hat | |
Red Hat Certificate System 11Red Hat | |
Red Hat Certificate System 9Red Hat | |
Red Hat Certificate System 9Red Hat | |
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 6Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-18047vdb-entry
- RHBZ#2507956issue-tracking
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