CVE-2026-50229: Apache Tomcat · Basic XSS
Affects Apache TomcatSource CVE Database V5
Exposed hosts seen by OffSeq Mirage · public detection template (Nuclei) · CVSS 6.1 Medium : upgrade to 8.5.101 or 7.0.110 when convenient.
Data as of 11 Nov 2026, 23:24 UTC
- EPSS
- 4.0% chance of exploitation in 30 days – higher than 90% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 8.5.101, 7.0.110
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 29 Jun 2026
Detectable: evidence found.
Weaponized: evidence found.
Public exploit code: GitHub proofs of concept
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: evidence found.
3 exposed hosts found; no attack traffic recorded
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, OffSeq Mirage (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
What to do
Upgrade org.apache.tomcat/tomcat to 8.5.101 or 7.0.110.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Apache Software FoundationApache Tomcat | Affected
| Fixed in– |
Mavenorg.apache.tomcat/tomcatpkg:maven/org.apache.tomcat/tomcatOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users should upgrade affected Apache Tomcat versions to 11.0.23, 10.1.56, 9.0.119, or later versions where the vulnerability is fixed. No official temporary or alternative mitigations are indicated. Patch status is confirmed by the vendor's recommended upgrade versions. Users should verify their Tomcat version and apply the upgrade accordingly.
Description
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.