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CVE-2026-43512

Apache Tomcat: Digest authenticator will authenticate any unknown user

Published: May 12, 2026Updated: May 15, 2026 Sources: CVE List NVD BDUCWE-592
9.8CRITICAL
NVD MITRE
EPSS Score
1.2%
Top 33.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from before 7.0.0. Older unsupported versions any also be affect Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-592

Affected Products

Red Hat Inc.
commercial·USaka red hat
Red Hat Process AutomationOn-prem
Operating Systems / linux-distro
OpenShift Dev SpacesOn-prem
Operating Systems / linux-distro
Jboss Web ServerOn-prem
Operating Systems / linux-distro
Red Hat Hardened ImagesOn-prem
Operating Systems / linux-distro
apache
oss-project·USaka apache httpd, apache http server
tomcatOn-premWeb App
Networking Infrastructure / load-balancer-proxy
Canonical Ltd.
commercial·GBaka canonical
UbuntuOn-premOS
Operating Systems / linux-distro
Apache Software Foundation
oss-project·USaka apache foundation
Apache TomcatOn-premWeb App
Networking Infrastructure / load-balancer-proxy
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-43512?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://lists.apache.org/thread/7x09x7o12solvclslw3sz0288xc8wx73
lists.apache.org
http://www.openwall.com/lists/oss-security/2026/05/12/8
openwall.com
https://github.com/advisories/GHSA-h6fc-48rj-7qqh
github.com
and 12 more references View all →
News mentions
2

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