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Advisory details: gitlab / maven/org.apache.tomcat/tomcat/CVE-2026-65905
Advisory ID gitlab/maven/org.apache.tomcat/tomcat/CVE-2026-65905
Aliases CVE-2026-65905
GHSA-9xv2-5v5q-p794
Summary Apache Tomcat's DIGEST authenticator has an Authentication Bypass by Capture-replay vulnerability Authentication Bypass by Capture-replay vulnerability in Apache Tomcat's DIGEST authenticator. If, before windowSize requests have been made, a client makes a DIGEST authenticated request with a nonceCount on the upper boundary of the replay window then that request is replayable once only while the associated nonceCount remains within the replay window. 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 7.0.30 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.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (3)
CWE-294 Authentication Bypass by Capture-replay
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3.1 https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.apache.tomcat/tomcat/CVE-2026-65905.yml
Reference id Reference type URL
https://lists.apache.org/thread/9v114xlpgbzrrbzz5vf9f6r2q4wnxwwj
CVE-2026-65905 https://nvd.nist.gov/vuln/detail/CVE-2026-65905
GHSA-9xv2-5v5q-p794 https://github.com/advisories/GHSA-9xv2-5v5q-p794
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.apache.tomcat/tomcat/CVE-2026-65905.yml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.