CVE-2026-65905

Apache Tomcat: Limited replay attack possible with DIGEST authentication

At a glance

Severity: CRITICAL 9.8
EPSS: EPSS 0.56 % · percentile 47 (2026-10-28)
State: PUBLISHED
Published: 2026-08-25
Updated: 2026-08-26
Assigner: apache
NVD status: Analyzed

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Weaknesses (CWE)

CWE-294

Advisories

GHSA-9xv2-5v5q-p794 — Apache Tomcat's DIGEST authenticator has an Authentication Bypass by Capture-replay vulnerability

European references

ENISA EUVD · EUVD-2026-66128
GCVE · GCVE-0-2026-65905

CERT-FR advisories

CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
CERTFR-2026-AVI-1336 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2026-AVI-1256 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2026-AVI-1249 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
CERTFR-2026-AVI-1165 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2026-AVI-1083 — Multiples vulnérabilités dans Apache Tomcat · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 7.0.30 ≤ 7.0.109
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 8.5.0 < 9.0.121
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 10.1.0 < 10.1.58
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 11.0.0 < 11.0.25

Affected products

Product	Versions
Apache Software Foundation · Apache Tomcat	affected 11.0.0-M1 ≤ 11.0.24 ; affected 10.1.0-M1 ≤ 10.1.57 ; affected 9.0.0.M1 ≤ 9.0.120 ; affected 8.5.0 ≤ 8.5.100 ; affected 7.0.30 ≤ 7.0.109

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD