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.
Fix
Public exploits 1
- qsuv/CVE-2026-50229 PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Patch, vendor advisory and mitigation references on NVD 1
- https://lists.apache.org/thread/wlt2no8bw45zl1w8byop4zfqphldf5j0 Vendor Advisory, Mailing List
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.1 · apacheNVD modified 2026-10-25 21:10
Affected (CPE criteria) 1
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
References 2
- https://lists.apache.org/thread/wlt2no8bw45zl1w8byop4zfqphldf5j0 Vendor Advisory, Mailing List
- http://www.openwall.com/lists/oss-security/2026/06/29/20 Third Party Advisory