CVE-2026-65905

CVE Enrichment

CVSS: 9.8 CRITICAL
EPSS: 0.56%
EPSS Percentile: 45.98%
CISA KEV: Not listed

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: [email protected]
Published: 26-Aug-2026 05:17
Last Modified: 27-Aug-2026 22:17
EPSS Date: 2026-10-22
CWE: CWE-294

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:N /
                            UI:N /
                            S:U /
                            C:H /
                            I:H /
                            A:H

Affected Products / Versions

apache / tomcat
Version / affected range: * · from (inclusive) 7.0.30 · through (inclusive) 7.0.109
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache / tomcat
Version / affected range: * · from (inclusive) 8.5.0 · before (exclusive) 9.0.121
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache / tomcat
Version / affected range: * · from (inclusive) 10.1.0 · before (exclusive) 10.1.58
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache / tomcat
Version / affected range: * · from (inclusive) 11.0.0 · before (exclusive) 11.0.25
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*

References

Last enrichment sync: 23-Oct-2026 17:34
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

Atlassian’s vulnerability disclosure portal also lists CVE-2026-65905, a critical-severity Apache Tomcat flaw affecting Data Center and Crowd, among the issues disclosed on October 20. Atlassian October Bulletin Covers 75 Third-Party CVEs Across Its Products

CVE (7)

Vendors (1)

Products (8)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.