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.
Published: 2026-10-02
Score: 8.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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.

Tracking

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Advisories

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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
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
Vendors & Products Redhat
Redhat certificate System
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}


Subscriptions

Redhat Certificate System Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-10-02T19:34:33.328Z

Reserved: 2026-10-02T18:56:53.056Z

Link: CVE-2026-104988

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-02T20:17:01.370

Modified: 2026-10-02T20:17:01.370

Link: CVE-2026-104988

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-02T20:30:16Z

Weaknesses