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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
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
0.6%
Top 58.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

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

Apache TomcatApache Software Foundation
On-premWeb App
Networking Infrastructure / load-balancer-proxy
tomcatapache
On-premWeb App
Networking Infrastructure / load-balancer-proxy
UbuntuCanonical Ltd.
On-premOS
Operating Systems / linux-distro
TomcatApache Software Foundation
On-premWeb App
Networking Infrastructure / load-balancer-proxy
Red Hat Process AutomationRed Hat Inc.
On-premDev Tool
DevTools & CI / build-test-tools
apache software foundationoss-projectUSWeb & CMS Pluginsaka apache foundation
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd
canonical ltd.commercialGBOperating Systemsaka canonical
red hat inc.commercialUSOperating Systemsaka red hat
and 5 more affected products View all →

Exploitability

Official Patch Available

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 →

Timeline

Published
May 12, 2026
Last Updated
May 15, 2026
News mentions
2

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