---
id: CVE-2026-68569
title: >-
  Improper Authentication vulnerability in Apache Tomcat meant that in some
  circumstances (e.g
summary: >-
  Improper Authentication vulnerability in Apache Tomcat meant that in some
  circumstances (e.g. CLIENT-CERT, SPNEGO) that a user would be authenticated
  even if the user did not exist in the DataSourceRealm.




  This issue affects Apache Tom…
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-287
  - CWE-305
vendor: apache
product: tomcat
affected:
  - 'tomcat >= 7.0.0, <= 7.0.109'
  - 'tomcat >= 8.5.0, < 9.0.121'
  - 'tomcat >= 10.1.0, < 10.1.58'
  - 'tomcat >= 11.0.0, < 11.0.25'
patched:
  - tomcat 11.0.25
published: '2026-08-25'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T12:17:17.257'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-68569'
references:
  - url: 'https://lists.apache.org/thread/8robqo76q0osxgw0b5lcwgz0hcf9h4zc'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/08/26/8'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68569.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-68569'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2524160'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-68569'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-68569'
  - url: 'https://access.redhat.com/errata/RHSA-2026:68257'
  - url: 'https://access.redhat.com/errata/RHSA-2026:68258'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00526
epssPercentile: 0.42066
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-08-26T18:38:39.170628Z'
ingestedAt: '2026-09-21T11:35:54.437Z'
scores:
  nvd: 8.1
  vendor: 8.2
---

## Overview

Improper Authentication vulnerability in Apache Tomcat meant that in some circumstances (e.g. CLIENT-CERT, SPNEGO) that a user would be authenticated even if the user did not exist in the DataSourceRealm.



This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120.







The following versions were EOL at the time the CVE was created but are 
known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected.







Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.

## Affected

- `tomcat >= 7.0.0, <= 7.0.109`
- `tomcat >= 8.5.0, < 9.0.121`
- `tomcat >= 10.1.0, < 10.1.58`
- `tomcat >= 11.0.0, < 11.0.25`

## Remediation

Upgrade past the affected range:

- `tomcat 11.0.25`

## Vendor advisories

- **RHSA-2026:68257** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:68257)
- **RHSA-2026:68258** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:68258)
- **Red Hat VEX** · Important · affected: Red Hat JBoss Web Server 5, Red Hat JBoss Web Server 6, Red Hat JBoss Web Server 7, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, … · no fix planned: Red Hat JBoss Web Server 5, Red Hat JBoss Web Server 6, Red Hat JBoss Web Server 7 · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68569.json)