Executive brief
A security flaw has been identified in Dogtag PKI, a system used for managing digital certificates and secure identities. An unauthorized person can bypass security controls to remotely enable or disable the ACME service, which is responsible for automated certificate issuance. This could allow an attacker to disrupt business operations by causing a persistent denial of service or by re-enabling services that administrators had intentionally turned off.
Technical details
An authentication bypass exists in the Dogtag PKI ACME responder due to inconsistent path normalization between Tomcat and RESTEasy. The security constraints in web.xml use exact URL pattern matching for the /v1/enable and /v1/disable endpoints. By appending a trailing slash (e.g., /v1/enable/), an unauthenticated attacker can bypass Tomcat's security constraints while RESTEasy still routes the request to the underlying JAX-RS handler. Because the ACMEEnableService and ACMEDisableService components lack application-level authorization checks, an attacker can successfully toggle the ACME service state, leading to unauthorized service modification or persistent denial of service.
Affected products
- Dogtag PKI Dogtag PKI
- Red Hat Red Hat Certificate System 10, 11
- Red Hat Red Hat Enterprise Linux 7, 8, 9, 10
Timeline
- 2026-07-28: disclosed: Initial vulnerability report and CVE assignment
- 2026-07-28: advisory: NVD and Red Hat advisories published