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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
9.1CRITICAL
NVD MITRE
EPSS Score
1.1%
Top 36.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

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
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Weaknesses

CWE-285

Affected Products

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
apache
oss-project·USaka apache http server, apache httpd
tomcatOn-premWeb App
Networking Infrastructure / load-balancer-proxy
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-43515?We can run the check for you — a free external exposure review, no install. Check my exposure

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 →
News mentions
2

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