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CVE-2026-111094: CWE-502 in JetBrains TeamCity

0
High
VulnerabilityCVE-2026-111094cvecve-2026-111094cwe-502
Published: 10/15/2026 (10/15/2026, 15:29:53 UTC)
Source: CVE Database V5
Vendor/Project: JetBrains
Product: TeamCity

Description

In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 remote code execution via a whitelist bypass in the build messages protocol was possible

CVSS v3.1

Score 8.1high

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

JetBrains

TeamCity

Affected versions
=0
Mavenmore threats →ai
org.jetbrains.teamcity/teamcity-server
pkg:maven/org.jetbrains.teamcity/teamcity-server
Affected versions
<2026.2<2026.1.4<2025.11.8

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 10/15/2026, 16:03:52 UTC

Technical Analysis

This vulnerability in JetBrains TeamCity involves a whitelist bypass in the build messages protocol that enables remote code execution. It affects versions prior to 2026.2, 2026.1.4, and 2025.11.8. The issue is categorized under CWE-502, indicating unsafe deserialization of untrusted data. The CVSS v3.1 score is 8.1, reflecting high impact with network attack vector, high complexity, no privileges required, no user interaction, and high confidentiality, integrity, and availability impacts.

Potential Impact

Successful exploitation allows an unauthenticated attacker to execute arbitrary code remotely on the affected TeamCity server. This can lead to full system compromise, including unauthorized access, data modification, and service disruption.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Users should monitor JetBrains advisories for updates and apply patches once available.

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Technical Details

Data Version
5.2
Assigner Short Name
JetBrains
Date Reserved
2026-10-15T15:20:41.498Z
Cvss Version
3.1
State
PUBLISHED

Threat ID: 6ad0f5fd2cdf04f65641fe0e

Added to database: 10/15/2026, 15:49:17 UTC

Last enriched: 10/15/2026, 16:03:52 UTC

Last updated: 10/15/2026, 19:00:27 UTC

Views: 9

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