Account Takeover Vulnerability in JetBrains TeamCity
CVE-2026-100255

8.1HIGH

Key Information:

Vendor

Jetbrains
Status
Teamcity
Vendor
CVE Published:
30 September 2026

What is CVE-2026-100255?

A vulnerability in JetBrains TeamCity allows an attacker to take control of an administrator account through a compromised password reset process. This issue affects versions prior to 2026.2, including 2026.1.4 and 2025.11.8, leaving systems exposed to unauthorized access. Organizations using these versions should prioritize updating to secure their environments.

Affected Version(s)

TeamCity 0 < 2026.2, 2026.1.4, 2025.11.8

References

https://www.jetbrains.com/privacy-security/issues-fixed/

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.