CVE-2026-50229

Apache Tomcat: XSS in number guess example

MEDIUM

6.1

CVSS Score

Published: June 29, 2026 at 08:36 PM UTC

Updated: October 25, 2026 at 09:10 PM UTC

1 product affected across 1 vendorTomcat

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Severity

MEDIUM6.1

Exploit prediction

EPSS 4%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Tomcat · Apache

95%

v ≤ 7.0.10910.1.0 ≤ v < 10.1.5611.0.0 ≤ v < 11.0.238.5.0 ≤ v ≤ 8.5.1009.0.0 ≤ v < 9.0.11910.1.0-M1 11.0.0-M1 7.0.0 8.5.0 9.0.0.M1

Affected range stops below 10.1.56, so it looks safe — our inference, not a vendor statement

Affected range stops below 11.0.23, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.0.119, so it looks safe — our inference, not a vendor statement

Vendor states this is fixed in 7.0.0 (unknown)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://lists.apache.org/thread/wlt2no8bw45zl1w8byop4zfqphldf5j0

References (2)

Vendor AdvisoryMailing List

Source: cverecord

https://lists.apache.org/thread/wlt2no8bw45zl1w8byop4zfqphldf5j0

Third Party Advisory

Source: af854a3a-2127-422b-91ae-364da2661108

http://www.openwall.com/lists/oss-security/2026/06/29/20

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: CHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-80

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