SEPTEMBER 17, 2026
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Case File

CVE-2026-65905

CRITICAL · CVSS 9.8 EPSS 0.77%

Source: NVD + CISA KEV + EPSS · Published 2026-08-25 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

Apache Tomcat's DIGEST authenticator is vulnerable to an authentication bypass due to a capture-replay flaw, allowing a client to replay a DIGEST authenticated request under specific conditions. This vulnerability impacts multiple versions of Tomcat, including those that are end-of-life, and could lead to unauthorized access if exploited. Organizations running affected versions should prioritize upgrading to the latest patched releases to mitigate potential security risks.

CVE
CVE-2026-65905
Severity
CRITICAL
CVSS
9.8
EPSS
0.77%
Windows Apache

Original NVD Description

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.

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