CVE-2026-111096
Undergoing Analysis Undergoing Analysis - In Progress

Stored XSS in JetBrains TeamCity Classic Build Log

Publication date: 2026-10-15

Last updated on: 2026-10-15

Assigner: JetBrains s.r.o.

Description
In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 stored XSS in the classic build log was possible

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Meta Information

Published
2026-10-15
Last Modified
2026-10-15
Generated
2026-10-15
AI Q&A
2026-10-15
EPSS Evaluated
N/A
NVD
CVE-2026-111096
EUVD
EUVD-2026-102149

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
JetBrains TeamCity 0

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This vulnerability is a stored cross-site scripting (XSS) issue in JetBrains TeamCity before versions 2026.2, 2026.1.4, and 2025.11.8. It allows malicious scripts to be stored in the classic build log, which can then be executed when viewed by other users.

Impact Analysis

An attacker could exploit this to inject malicious scripts into build logs. This may lead to unauthorized actions being performed on behalf of users, theft of session cookies, or defacement of the TeamCity interface.

Compliance Impact

This vulnerability could lead to data breaches or unauthorized access, violating GDPR's integrity and confidentiality principles. For HIPAA, it may compromise protected health information integrity. Compliance risks include fines and reputational damage.

Mitigation Strategies

Update JetBrains TeamCity to version 2026.2, 2026.1.4, or 2025.11.8 or later to address the stored XSS vulnerability in the classic build log.

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