Critical severity9.8NVD Advisory· Published Aug 25, 2026· Updated Aug 27, 2026
CVE-2026-65905
CVE-2026-65905
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.apache.tomcat:tomcatMaven | >= 11.0.0-M1, < 11.0.25 | 11.0.25 |
org.apache.tomcat:tomcatMaven | >= 10.1.0-M1, < 10.1.58 | 10.1.58 |
org.apache.tomcat:tomcatMaven | >= 9.0.0.M1, < 9.0.121 | 9.0.121 |
org.apache.tomcat:tomcatMaven | >= 8.5.0, <= 8.5.100 | — |
org.apache.tomcat:tomcatMaven | >= 7.0.30, <= 7.0.109 | — |
org.apache.tomcat.embed:tomcat-embed-coreMaven | >= 11.0.0-M1, < 11.0.25 | 11.0.25 |
org.apache.tomcat.embed:tomcat-embed-coreMaven | >= 10.1.0-M1, < 10.1.58 | 10.1.58 |
org.apache.tomcat.embed:tomcat-embed-coreMaven | >= 9.0.0.M1, < 9.0.121 | 9.0.121 |
org.apache.tomcat.embed:tomcat-embed-coreMaven | >= 8.5.0, <= 8.5.100 | — |
org.apache.tomcat.embed:tomcat-embed-coreMaven | >= 7.0.30, <= 7.0.109 | — |
org.apache.tomcat:tomcat-catalinaMaven | >= 11.0.0-M1, < 11.0.25 | 11.0.25 |
org.apache.tomcat:tomcat-catalinaMaven | >= 10.1.0-M1, < 10.1.58 | 10.1.58 |
org.apache.tomcat:tomcat-catalinaMaven | >= 9.0.0.M1, < 9.0.121 | 9.0.121 |
org.apache.tomcat:tomcat-catalinaMaven | >= 8.5.0, <= 8.5.100 | — |
org.apache.tomcat:tomcat-catalinaMaven | >= 7.0.30, <= 7.0.109 | — |
Affected products
37- osv-coords36 versionspkg:apk/chainguard/camunda-8.9pkg:apk/chainguard/thingsboard-tb-nodepkg:apk/chainguard/nacospkg:rpm/opensuse/tomcat11&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/tomcat&distro=openSUSE%20Leap%2016.0pkg:bitnami/tomcatpkg:rpm/opensuse/tomcat10&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/tomcat11&distro=openSUSE%20Tumbleweedpkg:apk/chainguard/kayenta-fips-2025.4pkg:rpm/opensuse/tomcat&distro=openSUSE%20Tumbleweedpkg:apk/chainguard/kayenta-2026.2pkg:apk/chainguard/ontop-fipspkg:apk/chainguard/conductor-fipspkg:apk/chainguard/ontoppkg:apk/chainguard/thingsboard-tb-mqtt-transportpkg:apk/chainguard/kayenta-fips-2026.1pkg:apk/chainguard/kayenta-fips-2026.2pkg:maven/org.apache.tomcat/tomcatpkg:maven/org.apache.tomcat.embed/tomcat-embed-corepkg:maven/org.apache.tomcat/tomcat-catalinapkg:apk/chainguard/conductorpkg:apk/chainguard/kayenta-2026.1pkg:rpm/opensuse/tomcat10&distro=openSUSE%20Tumbleweedpkg:apk/chainguard/nacos-dockerpkg:apk/chainguard/kayenta-2025.2pkg:apk/chainguard/kayenta-fips-2025.2pkg:apk/chainguard/camunda-zeebe-8.6pkg:apk/chainguard/kayenta-2025.4pkg:apk/chainguard/kayenta-2026.0pkg:apk/chainguard/kayenta-fips-2026.0pkg:apk/wolfi/thingsboard-tb-mqtt-transportpkg:apk/wolfi/thingsboard-tb-nodepkg:apk/chainguard/camunda-8.8pkg:apk/chainguard/camunda-zeebe-8.7pkg:apk/chainguard/camunda-zeebe-8.8pkg:apk/chainguard/camunda-zeebe-8.9
< 8.9.18-r1+ 35 more
- (no CPE)range: < 8.9.18-r1
- (no CPE)range: < 4.3.1.4-r2
- (no CPE)range: < 3.2.4-r1
- (no CPE)range: < 11.0.25-160000.1.1
- (no CPE)range: < 9.0.121-160000.1.1
- (no CPE)range: >= 7.0.30, < 9.0.121
- (no CPE)range: < 10.1.59-160000.1.1
- (no CPE)range: < 11.0.25-1.1
- (no CPE)range: < 2025.4.6-r8
- (no CPE)range: < 9.0.121-1.1
- (no CPE)range: < 2026.2.5-r1
- (no CPE)range: < 5.5.0-r17
- (no CPE)range: < 3.32.1-r5
- (no CPE)range: < 5.5.0-r23
- (no CPE)range: < 4.3.1.4-r2
- (no CPE)range: < 2026.1.2-r5
- (no CPE)range: < 2026.2.5-r2
- (no CPE)range: >= 11.0.0-M1, < 11.0.25
- (no CPE)range: >= 11.0.0-M1, < 11.0.25
- (no CPE)range: >= 11.0.0-M1, < 11.0.25
- (no CPE)range: < 3.32.1-r7
- (no CPE)range: < 2026.1.2-r5
- (no CPE)range: < 10.1.59-1.1
- (no CPE)range: < 3.2.4-r1
- (no CPE)range: < 2025.2.4-r9
- (no CPE)range: < 2025.2.4-r9
- (no CPE)range: < 8.6.39-r12
- (no CPE)range: < 2025.4.6-r14
- (no CPE)range: < 2026.0.7-r4
- (no CPE)range: < 2026.0.5-r3
- (no CPE)range: < 4.3.1.4-r2
- (no CPE)range: < 4.3.1.4-r2
- (no CPE)range: < 8.8.37-r1
- (no CPE)range: < 8.7.38-r1
- (no CPE)range: < 8.8.37-r1
- (no CPE)range: < 8.9.18-r1
Patches
Vulnerability mechanics
References
4- www.openwall.com/lists/oss-security/2026/08/26/4nvdThird Party AdvisoryMailing ListWEB
- github.com/advisories/GHSA-9xv2-5v5q-p794ghsaADVISORY
- lists.apache.org/thread/9v114xlpgbzrrbzz5vf9f6r2q4wnxwwjnvdVendor AdvisoryMailing ListWEB
- nvd.nist.gov/vuln/detail/CVE-2026-65905ghsaADVISORY
News mentions
2- Apache Tomcat Vulnerabilities Let Attackers Bypass Security Controls and Crash ServersCyber Security News · Aug 27, 2026
- Apache: 25 Vulnerabilities Across Tomcat, Camel, Hive, and More Disclosed Aug 24-26Vypr Intelligence · Aug 26, 2026