CVE-2026-50229

Apache Tomcat: XSS in number guess example

Published Jun 29, 2026 CVSS 3.1 · 6.1 Medium EPSS 4.1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4889-1 tomcat10 security update
Github GHSA Github GHSA GHSA-pg42-rg8c-j886 Apache Tomcat has a Cross-site Scripting vulnerability
Ubuntu USN Ubuntu USN USN-8551-1 Tomcat vulnerabilities
History
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

Type Values Removed Values Added
First Time appeared Apache
Apache tomcat
Vendors & Products Apache
Apache tomcat
Type Values Removed Values Added
Weaknesses CWE-79
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}

threat_severity

Moderate

Type Values Removed Values Added
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.
Title Apache Tomcat: XSS in number guess example
Weaknesses CWE-80
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Jun 30, 2026, 12:50 PM
Reserved
Jun 4, 2026, 9:39 AM
Status
Analyzed
Published
Jun 29, 2026, 9:16 PM
Modified
Oct 25, 2026, 9:10 PM
Severity
Moderate
Public date
Jun 29, 2026, 8:36 PM