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CVE-2026-43515

Apache Tomcat: Security constraints not correctly applied

Published: May 12, 2026Updated: May 15, 2026 Sources: CVE List NVD BDUCWE-285
NVD MITRE
9.1CVSSCRITICAL
EPSS Score
0.4%
Top 67.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Improper Authorization vulnerability when multiple method constraints define an HTTP method for the same extension 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 7.0.0 through 7.0.109. 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:N
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:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-285

Affected Products

UbuntuCanonical Ltd.
On-premOS
Operating Systems / linux-distro
TomcatApache Software Foundation
On-premWeb App
Networking Infrastructure / load-balancer-proxy
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
Apache TomcatApache Software Foundation
On-premWeb App
Networking Infrastructure / load-balancer-proxy
canonical ltd.commercialGBOperating Systemsaka canonical
apache software foundationoss-projectUSWeb & CMS Pluginsaka apache foundation
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «ред софт»commercialRUOperating Systemsaka red soft
and 1 more affected products View all →

Exploitability

Official Patch Available

References

https://github.com/advisories/GHSA-5m62-pw8w-7w9f
github.com
https://github.com/apache/tomcat/commit/db919ff9912b4d61d1b702a1342b8bde39270031
github.com
https://tomcat.apache.org/security-10.html
tomcat.apache.org
and 12 more references View all →

Timeline

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

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