Detections
Analytics

JetBrains TeamCity < 2025.11.8 / 2026.x < 2026.1.4 / 2026.2.x < 2026.2 (CVE-2026-100254) (Windows)

high Nessus Plugin ID 364473

Synopsis

The instance of JetBrains TeamCity installed on the remote host is affected by a vulnerability.

Description

The version of JetBrains TeamCity installed on the remote host is prior to 2025.11.8, or prior to 2026.1.4, or prior to 2026.2. It is, therefore, affected by a vulnerability:

 - 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)

Note that Nessus has not tested for this issue 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

http://www.nessus.org/u?270a2501

Plugin Details

Severity: High

ID: 364473

File Name: jetbrains_teamcity_2026_2_2026_1_4_2025_11_8_win.nasl

Version: 1.1

Type: Combined

Agent: windows, macosx, unix

Family: Misc.

Published: 10/9/2026

Updated: 10/9/2026

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

Temporal Score: 6.7

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-100254

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:jetbrains:teamcity

Required KB Items: installed_sw/JetBrains TeamCity

Exploit Ease: No known exploits are available

Patch Publication Date: 9/30/2026

Vulnerability Publication Date: 9/30/2026

Reference Information

CVE: CVE-2026-100254

CWE: 78

IAVA: 2026-A-1065-S