CVE-2026-104988: Authentication Bypass by Spoofing in Red Hat Red Hat Certificate System 10
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.
CVE-2026-104988: Authentication Bypass by Spoofing in Red Hat Red Hat Certificate System 10
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.
CVSS v3.1
Score 8.1high
Affected software
Red Hat
Red Hat Certificate System 10
Red Hat
Red Hat Certificate System 11
Red Hat
Red Hat Certificate System 9
Red Hat
Red Hat Certificate System 9
Red Hat
Red Hat Enterprise Linux 10
Red Hat
Red Hat Enterprise Linux 6
Red Hat
Red Hat Enterprise Linux 7
Red Hat
Red Hat Enterprise Linux 8
Red Hat
Red Hat Enterprise Linux 9
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-10-02T18:56:53.056Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-104988","vendor":"Red Hat"}]
Threat ID: 6ac00a1fa43b0b3b89f69c5e
Added to database: 10/02/2026, 19:46:39 UTC
Last updated: 10/02/2026, 19:46:39 UTC
Views: 1
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