CVE-2026-50229

EUVD-2026-40226
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in the number guess example for Apache Tomcat.

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.
Basic XSS
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
apacheCNA
UNKNOWN
---
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
apachetomcat
𝑥
≤ 11.0.22
CNA
apachetomcat
𝑥
≤ 10.1.55
CNA
apachetomcat
9.0.0.M1 ≤
𝑥
≤ 9.0.118
CNA
apachetomcat
8.5.0 ≤
𝑥
≤ 8.5.100
CNA
apachetomcat
7.0.0 ≤
𝑥
≤ 7.0.109
CNA