Detections
Analytics
JetBrains TeamCity < 2025.11.8 / 2026.1.x < 2026.1.4 Multiple Vulnerabilities
high Nessus Plugin ID 362481
Synopsis
The instance of JetBrains TeamCity installed on the remote host is affected by multiple vulnerabilities.Description
The version of JetBrains TeamCity installed on the remote host is prior to 2025.11.8, or 2026.1.x prior to 2026.1.4.It is, therefore, affected by multiple vulnerabilities:
- In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 sandbox escape leading to code execution was possible via the versioned settings Kotlin DSL (CVE-2026-100253)
- In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 authenticated users could execute commands on Windows servers via CRLF injection in Pipeline Git connection settings (CVE-2026-100254)
- In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 administrator account takeover was possible via password reset (CVE-2026-100255)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Upgrade to JetBrains TeamCity version 2025.11.8, 2026.1.4, 2026.2 or later.See Also
Plugin Details
Severity: High
ID: 362481
File Name: teamcity_2026_1_4.nasl
Version: 1.2
Type: Combined
Agent: windows, macosx, unix
Family: Misc.
Published: 10/2/2026
Updated: 10/2/2026
Configuration: Enable thorough checks (optional)
Supported Sensors: Nessus Agent, Nessus
Enable CGI Scanning: true
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 58.35
CVSS v2
Risk Factor: High
Base Score: 9
Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2026-100253
CVSS v3
Risk Factor: High
Base Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vulnerability Information
CPE: cpe:/a:jetbrains:teamcity
Required KB Items: installed_sw/JetBrains TeamCity
Patch Publication Date: 9/30/2026
Vulnerability Publication Date: 9/30/2026
Reference Information
CVE: CVE-2026-100253, CVE-2026-100254, CVE-2026-100255
IAVA: 2026-A-1065