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CVE-2026-65905 Apache Tomcat

Affected softwareApache Tomcat
Severity9.8 Critical CVSS 3.1
Fixed in11.0.25, 10.1.58, 9.0.121
WeaknessCWE-294
Published25 Aug 2026
Updated27 Aug 2026

Published 2 months ago. NVD often adds the list of affected products days or weeks after a CVE is published, and the other sources we check lag too. The scope and status here may change.

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.

Exploitation status

No public exploit

No exploit has been reported in the sources we check.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC none indexed
  • EPSS 0.76% chance in 30 days

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists.

  • Protection none
  • Action unverified
  • Review automated Upstream data
  • Record active
Decided by Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update October 2026 ↗ CPU 2026-Q4 Oracle Communications / Microservices (Apache Tomcat) (7.0.0)
Oracle Supply Chain / Folders & Files Attachment (Apache Tomcat) (9.3.6)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Communications Microservices (Apache Tomcat) 7.0.0 7.0.0
Oracle Supply Chain Folders & Files Attachment (Apache Tomcat) 9.3.6 9.3.6

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.apache.tomcat:tomcat 11.0.0-M1 11.0.25 unbounded
org.apache.tomcat:tomcat 10.1.0-M1 10.1.58 unbounded
org.apache.tomcat:tomcat 9.0.0.M1 9.0.121 unbounded
org.apache.tomcat:tomcat 8.5.0 none 8.5.100
org.apache.tomcat:tomcat 7.0.30 none 7.0.109
org.apache.tomcat.embed:tomcat-embed-core 11.0.0-M1 11.0.25 unbounded
org.apache.tomcat.embed:tomcat-embed-core 10.1.0-M1 10.1.58 unbounded
org.apache.tomcat.embed:tomcat-embed-core 9.0.0.M1 9.0.121 unbounded
org.apache.tomcat.embed:tomcat-embed-core 8.5.0 none 8.5.100
org.apache.tomcat.embed:tomcat-embed-core 7.0.30 none 7.0.109
org.apache.tomcat:tomcat-catalina 11.0.0-M1 11.0.25 unbounded
org.apache.tomcat:tomcat-catalina 10.1.0-M1 10.1.58 unbounded
org.apache.tomcat:tomcat-catalina 9.0.0.M1 9.0.121 unbounded
org.apache.tomcat:tomcat-catalina 8.5.0 none 8.5.100
org.apache.tomcat:tomcat-catalina 7.0.30 none 7.0.109

Products and versions

4 products, 19 version entries
SourceVendorProductSchemeAffected versions
nvd apache tomcat generic ≥ 7.0.30 and ≤ 7.0.109 · ≥ 8.5.0 and < 9.0.121 · ≥ 10.1.0 and < 10.1.58 · ≥ 11.0.0 and < 11.0.25
osv org.apache.tomcat tomcat generic ≥ 7.0.30 and ≤ 7.0.109 · ≥ 8.5.0 and ≤ 8.5.100 · ≥ 9.0.0 and < 9.0.121 · ≥ 10.1.0 and < 10.1.58 · ≥ 11.0.0 and < 11.0.25
osv org.apache.tomcat tomcat-catalina generic ≥ 7.0.30 and ≤ 7.0.109 · ≥ 8.5.0 and ≤ 8.5.100 · ≥ 9.0.0 and < 9.0.121 · ≥ 10.1.0 and < 10.1.58 · ≥ 11.0.0 and < 11.0.25
osv org.apache.tomcat.embed tomcat-embed-core generic ≥ 7.0.30 and ≤ 7.0.109 · ≥ 8.5.0 and ≤ 8.5.100 · ≥ 9.0.0 and < 9.0.121 · ≥ 10.1.0 and < 10.1.58 · ≥ 11.0.0 and < 11.0.25

References

URLTags
https://github.com/apache/tomcat PACKAGE
https://lists.apache.org/thread/9v114xlpgbzrrbzz5vf9f6r2q4wnxwwj WEB
http://www.openwall.com/lists/oss-security/2026/08/26/4 WEB

Timeline

Published2026-08-25By the CVE Program.
NVD record modified2026-08-27NVD's own last-modified date for this record.