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In JetBrains TeamCity before 2026.1.3 2025.11.7 kotlin DSL sandbox escape leading to RCE on the server was possible (CVE-2026-106218)

0
High
VulnerabilityCVE-2026-106218gcveosvghsa-p8v4-6cfg-7hh7cve-2026-106218ghsa
Published: 10/06/2026 (10/06/2026, 18:31:34 UTC)
Source: GCVE Database

Description

A vulnerability in JetBrains TeamCity before versions 2026.1.3 and 2025.11.7 allows a Kotlin DSL sandbox escape that can lead to remote code execution (RCE) on the server. This flaw enables an attacker with limited privileges to execute arbitrary code on the affected server without user interaction.

CVSS v3.1

Score 8.8high

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

Affected software

Mavenmore threats →ai
org.jetbrains.teamcity/teamcity-server
pkg:maven/org.jetbrains.teamcity/teamcity-server
Affected versions
<2026.1.3<2025.11.7

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 10/06/2026, 21:43:26 UTC

Technical Analysis

CVE-2026-106218 describes a sandbox escape vulnerability in the Kotlin DSL feature of JetBrains TeamCity versions prior to 2026.1.3 and 2025.11.7. This vulnerability allows an attacker with limited privileges to bypass sandbox restrictions and achieve remote code execution on the TeamCity server. The vulnerability is classified under CWE-184 (Improper Access Control). The CVSS v3.1 base score is 8.8, indicating high severity, with network attack vector, low attack complexity, and no user interaction required.

Potential Impact

Successful exploitation of this vulnerability could allow an attacker with limited privileges to execute arbitrary code on the TeamCity server, potentially leading to full compromise of the server, including confidentiality, integrity, and availability impacts.

Mitigation Recommendations

A fix is available in JetBrains TeamCity versions 2026.1.3 and 2025.11.7. Users should upgrade to these or later versions to remediate the vulnerability. No additional mitigation guidance is provided in the source data.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
GHSA-p8v4-6cfg-7hh7
Osv Schema Version
1.4.0
Aliases
["CVE-2026-106218"]
Database Specific Severity
HIGH
Cvss Version
3.1
State
PUBLISHED

Threat ID: 6ac56b252cdf04f656e1c595

Added to database: 10/06/2026, 21:41:57 UTC

Last enriched: 10/06/2026, 21:43:26 UTC

Last updated: 10/07/2026, 04:04:08 UTC

Views: 7

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