CVE-2026-65906: CWE-94 in JetBrains TeamCity
A high-severity vulnerability (CWE-94) in JetBrains TeamCity before versions 2026.1.2 and 2025.11.6 allows code execution via escape from the Kotlin DSL sandbox. This vulnerability enables an attacker with limited privileges to execute arbitrary code without user interaction. No official patch or remediation guidance has been confirmed yet.
AI Analysis
Technical Summary
CVE-2026-65906 is a code execution vulnerability in JetBrains TeamCity affecting versions prior to 2026.1.2 and 2025.11.6. The issue arises from the ability to escape the Kotlin DSL sandbox, which is intended to restrict code execution within a safe environment. Exploitation requires at least limited privileges (PR:L) and no user interaction (UI:N). The vulnerability has a CVSS 3.1 base score of 8.8, indicating high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available to confirm remediation status.
Potential Impact
Successful exploitation allows an attacker with limited privileges to execute arbitrary code on the TeamCity server, potentially leading to full system compromise. The vulnerability impacts confidentiality, integrity, and availability of the affected system. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to TeamCity instances and limit user privileges to reduce risk.
CVE-2026-65906: CWE-94 in JetBrains TeamCity
Description
A high-severity vulnerability (CWE-94) in JetBrains TeamCity before versions 2026.1.2 and 2025.11.6 allows code execution via escape from the Kotlin DSL sandbox. This vulnerability enables an attacker with limited privileges to execute arbitrary code without user interaction. No official patch or remediation guidance has been confirmed yet.
CVSS v3.1
Score 8.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-65906 is a code execution vulnerability in JetBrains TeamCity affecting versions prior to 2026.1.2 and 2025.11.6. The issue arises from the ability to escape the Kotlin DSL sandbox, which is intended to restrict code execution within a safe environment. Exploitation requires at least limited privileges (PR:L) and no user interaction (UI:N). The vulnerability has a CVSS 3.1 base score of 8.8, indicating high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available to confirm remediation status.
Potential Impact
Successful exploitation allows an attacker with limited privileges to execute arbitrary code on the TeamCity server, potentially leading to full system compromise. The vulnerability impacts confidentiality, integrity, and availability of the affected system. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to TeamCity instances and limit user privileges to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-07-23T12:24:36.330Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a620ea19c2644c7f815e028
Added to database: 07/23/2026, 12:52:49 UTC
Last enriched: 07/30/2026, 23:13:10 UTC
Last updated: 09/05/2026, 22:52:12 UTC
Views: 96
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