9.8

CVE-2026-65905: apache software foundation apache tomcat Authentication Bypass by Capture-replay

CVSS: 9.8v3.1CriticalAnalyzed
AliasesUBUNTU-CVE-2026-65905DEBIAN-CVE-2026-65905CGA-3jvf-wpwq-f6p9
Published 25-08-2026Last modified 26-08-2026
Open JSON

Vulnerability summary

CVE-2026-65905 is a critical (CVSS 9.8) Authentication Bypass by Capture-replay vulnerability in apache software foundation apache tomcat. EPSS estimates a 0.56% chance of exploitation in the next 30 days, higher than 45.5% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.56%
0%100%
Low · -0.21 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 21 · Related 17
MGASA-2026-0376OPENSUSE-SU-2026:11759-1OPENSUSE-SU-2026:11760-1OPENSUSE-SU-2026:11761-1OPENSUSE-SU-2026:21810-1OPENSUSE-SU-2026:21811-1

Timeline

  1. 25-08-2026
    PublishedVulnerability first disclosed.
  2. 26-08-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.56%

Chance of exploitation in the next 30 days

Percentile

46%

Versus all other CVEs

30-day change

-0.21 pp

From 0.77% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.56%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard24 products
  • camunda-8.8< 8.8.37-r1
  • camunda-8.9< 8.9.18-r1
  • camunda-zeebe-8.6< 8.6.39-r12
  • camunda-zeebe-8.7< 8.7.38-r1
  • camunda-zeebe-8.8< 8.8.37-r1
Ubuntu6 products
  • tomcat10All versions (No fix recorded)
  • tomcat11All versions (No fix recorded)
  • tomcat6All versions (No fix recorded)
  • tomcat7All versions (No fix recorded)
  • tomcat8All versions (No fix recorded)
Debian3 products
  • tomcat10All versions (No fix recorded) | < 10.1.60-1
  • tomcat11All versions (No fix recorded)
  • tomcat9< 9.0.70-2
Org.apache.tomcat2 products
  • tomcat≥ 11.0.0-M1, < 11.0.25 | ≥ 10.1.0-M1, < 10.1.58 | ≥ 9.0.0.M1, < 9.0.121 | ≥ 8.5.0, ≤ 8.5.100 | ≥ 7.0.30, ≤ 7.0.109
  • tomcat-catalina≥ 11.0.0-M1, < 11.0.25 | ≥ 10.1.0-M1, < 10.1.58 | ≥ 9.0.0.M1, < 9.0.121 | ≥ 8.5.0, ≤ 8.5.100 | ≥ 7.0.30, ≤ 7.0.109
Wolfi2 products
  • thingsboard-tb-mqtt-transport< 4.3.1.4-r2
  • thingsboard-tb-node< 4.3.1.4-r2
Apache1 product
  • tomcat≥ 7.0.30, ≤ 7.0.109 | ≥ 8.5.0, < 9.0.121 | ≥ 10.1.0, < 10.1.58 | ≥ 11.0.0, < 11.0.25
Apache software foundation1 product
  • apache tomcat≥ 11.0.0-M1, ≤ 11.0.24 | ≥ 10.1.0-M1, ≤ 10.1.57 | ≥ 9.0.0.M1, ≤ 9.0.120 | ≥ 8.5.0, ≤ 8.5.100 | ≥ 7.0.30, ≤ 7.0.109
Org.apache.tomcat.embed1 product
  • tomcat-embed-core≥ 11.0.0-M1, < 11.0.25 | ≥ 10.1.0-M1, < 10.1.58 | ≥ 9.0.0.M1, < 9.0.121 | ≥ 8.5.0, ≤ 8.5.100 | ≥ 7.0.30, ≤ 7.0.109

8 vendors · 40 products

References

11 links
Show all 11 references