---
id: CVE-2026-104988
title: A flaw was found in Dogtag PKI (pki-core)
summary: >-
  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 attri…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-290
vendor: Red Hat
product: 'redhat-pki:10/redhat-pki'
affected:
  - 'redhat-pki:10/redhat-pki (all versions)'
  - redhat-pki (all versions)
  - pki-core
  - redhat-pki
  - dogtag-pki
  - pki-core
  - pki-core
  - 'pki-core:10.6/pki-core'
  - pki-core
published: '2026-10-02'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T15:09:20.387'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104988'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-104988'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2545316'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-104988.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-104988'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104988'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00204
epssPercentile: 0.10276
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-05T17:44:11.068326Z'
ingestedAt: '2026-10-02T22:33:09.844Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Important · affected: Red Hat Certificate System 10, Red Hat Certificate System 11, Red Hat Enterprise Linux 10 · no fix planned: Red Hat Certificate System 10, Red Hat Certificate System 11, Red Hat Enterprise Linux 10 · updated 2026-10-02 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-104988.json)