CVE-2026-50229: medium-severity vulnerability in Apache Tomcat
Apache Tomcat: XSS in number guess example
Published · Updated
48Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendcvss 6.1epss 4.1%
from disclosure to weapon9 days
Published on NVDJun 29
1st PoC+9d
exploitation probability
4.1%top 9% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Affected products
Apache Software Foundation · Apache Tomcatpublic PoCs found — 1
githubgithub.com/zero-trace7/CVE-2026-50229★ 1⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Apache Tomcat
In the same product, most dangerous first.
CVE-2017-12617HIGHCVE-2017-12617EPSS 100.0%KEVCVE-2025-24813CRITICALApache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUTEPSS 99.9%KEVCVE-2017-12615HIGHCVE-2017-12615EPSS 99.6%KEVCVE-2016-8735CRITICALCVE-2016-8735EPSS 90.3%KEVCVE-2026-34486HIGHApache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptorEPSS 6.6%KEVCVE-2018-11784—CVE-2018-11784EPSS 97.7%