CVE-2026-100255: CWE-1289 in JetBrains TeamCity
In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 administrator account takeover was possible via password reset
AI Analysis
Technical Summary
JetBrains TeamCity versions prior to 2026.2, 2026.1.4, and 2025.11.8 contain a vulnerability (CWE-1289) that enables an attacker to take over administrator accounts through the password reset mechanism. The CVSS 3.1 score of 8.1 reflects high impact on confidentiality, integrity, and availability, with network attack vector and no privileges or user interaction required. The vulnerability was published on 2026-09-30. No vendor advisory or patch information is currently available.
Potential Impact
Successful exploitation of this vulnerability allows an attacker to gain administrator access to the affected TeamCity instances, potentially compromising the entire system, including sensitive data and build processes. The high CVSS score indicates critical impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the password reset functionality and monitor for suspicious activity related to account management.
CVE-2026-100255: CWE-1289 in JetBrains TeamCity
Description
In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 administrator account takeover was possible via password reset
CVSS v3.1
Score 8.1high
Affected software
JetBrains
TeamCity
pkg:maven/org.jetbrains.teamcity/teamcity-serverRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
JetBrains TeamCity versions prior to 2026.2, 2026.1.4, and 2025.11.8 contain a vulnerability (CWE-1289) that enables an attacker to take over administrator accounts through the password reset mechanism. The CVSS 3.1 score of 8.1 reflects high impact on confidentiality, integrity, and availability, with network attack vector and no privileges or user interaction required. The vulnerability was published on 2026-09-30. No vendor advisory or patch information is currently available.
Potential Impact
Successful exploitation of this vulnerability allows an attacker to gain administrator access to the affected TeamCity instances, potentially compromising the entire system, including sensitive data and build processes. The high CVSS score indicates critical impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the password reset functionality and monitor for suspicious activity related to account management.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-09-25T17:02:02.872Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6abd2c302a4e24523d2ec2f1
Added to database: 09/30/2026, 15:35:12 UTC
Last enriched: 09/30/2026, 15:49:02 UTC
Last updated: 10/01/2026, 04:59:33 UTC
Views: 23
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