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.
PUBLISHED5.2CWE-288
Dogtag-pki: pki-core: redhat-pki: pki: acme admin enable/disable endpoint authentication bypass via trailing slash
Problem type
Affected products
Red Hat
Red Hat Certificate System 10
Red Hat Certificate System 11
Red Hat Certificate System 9
Red Hat Certificate System 9
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
References
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-18047
RHBZ#2507956
https://bugzilla.redhat.com/show_bug.cgi?id=2507956
GitHub Security Advisories
GHSA-5xgg-8pvj-x39g
A flaw was found in Dogtag PKI's ACME responder where the web.xml security constraints use exact...
https://github.com/advisories/GHSA-5xgg-8pvj-x39gA 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.
JSON source
https://cveawg.mitre.org/api/cve/CVE-2026-18047Click to expand
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