A flaw was found in Dogtag PKI (pki-core). The CMCAuthForEST authentication plugin fails open when an EST fullcmc enrollment request is submitted via BasicAuth without an end-user TLS client certificate. The SSL_CLIENT_CERT session attribute retains the EST subsystem's agent certificate, which causes downstream authorization checks to treat the request as agent-privileged. An authenticated EST user can exploit this to obtain CA-signed certificates with arbitrary subject names.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
Disable basic authentication for all users. This can be done by removing the field "UserPasswords" for the user entries in the EST DS server.
References
History
Fri, 02 Oct 2026 19:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in Dogtag PKI (pki-core). The CMCAuthForEST authentication plugin fails open when an EST fullcmc enrollment request is submitted via BasicAuth without an end-user TLS client certificate. The SSL_CLIENT_CERT session attribute retains the EST subsystem's agent certificate, which causes downstream authorization checks to treat the request as agent-privileged. An authenticated EST user can exploit this to obtain CA-signed certificates with arbitrary subject names. | |
| Title | Pki-core: dogtag-pki: redhat-pki: pki: est fullcmc authentication bypass allows certificate mis-issuance with arbitrary subject | |
| First Time appeared |
Redhat
Redhat certificate System Redhat enterprise Linux |
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| Weaknesses | CWE-290 | |
| CPEs | cpe:/a:redhat:certificate_system:10 cpe:/a:redhat:certificate_system:11 cpe:/a:redhat:certificate_system:9 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat certificate System Redhat enterprise Linux |
|
| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-10-02T19:34:33.328Z
Reserved: 2026-10-02T18:56:53.056Z
Link: CVE-2026-104988
No data.
Status : Received
Published: 2026-10-02T20:17:01.370
Modified: 2026-10-02T20:17:01.370
Link: CVE-2026-104988
No data.
OpenCVE Enrichment
Updated: 2026-10-02T20:30:16Z
Weaknesses