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CVE-2026-55956

Apache Tomcat: Security constraints for default servlet ignored method

Published: Jun 29, 2026Updated: Jul 2, 2026 Sources: CVE List NVDCWE-285
6.5MEDIUM
NVD MITRE
EPSS Score
1.5%
Top 27.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet ignoring any method or method omission configured as part of the constraint. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-285

Affected Products

apache
oss-project·USaka apache httpd, apache http server
tomcatOn-premWeb App
Networking Infrastructure / load-balancer-proxy
Apache Software Foundation
oss-project·USaka apache foundation
Apache TomcatOn-premWeb App
Networking Infrastructure / load-balancer-proxy

Exploitability

Official Patch Available
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References

https://lists.apache.org/thread/dcjdcnnnww9hhdm016hr0l7hpw1bzjfp
lists.apache.org
http://www.openwall.com/lists/oss-security/2026/06/29/25
openwall.com
News mentions
1

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