Detections
Analytics

JetBrains YouTrack < 2026.2.19422 Multiple Vulnerabilities

high Nessus Plugin ID 379538

Synopsis

The remote host is affected by multiple vulnerabilities.

Description

The version of JetBrains YouTrack installed on the remote host is prior to 2026.2.19422. It is, therefore, affected by multiple vulnerabilities:

 - In JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX content was possible.
 (CVE-2026-103493)

 - In JetBrains YouTrack before 2026.2.19422 privilege escalation was possible via user group links.
 (CVE-2026-103490)

 - In JetBrains YouTrack before 2026.2.19422 missing authorisation allowed authenticated users to add themselves to project teams and access restricted issues. (CVE-2026-103488)

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 YouTrack version 2026.2.19422, or later.

See Also

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

Plugin Details

Severity: High

ID: 379538

File Name: jetbrains_youtrack_2026_2_19422.nasl

Version: 1.1

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 11/12/2026

Updated: 11/12/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.36

CVSS v2

Risk Factor: High

Base Score: 9.4

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

CVSS Score Source: CVE-2026-103493

CVSS v3

Risk Factor: High

Base Score: 8.1

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

Vulnerability Information

CPE: cpe:/a:jetbrains:youtrack

Required KB Items: installed_sw/JetBrains YouTrack

Patch Publication Date: 9/28/2026

Vulnerability Publication Date: 10/1/2026

Reference Information

CVE: CVE-2026-103488, CVE-2026-103489, CVE-2026-103490, CVE-2026-103491, CVE-2026-103492, CVE-2026-103493, CVE-2026-103494, CVE-2026-103495, CVE-2026-103496, CVE-2026-103497, CVE-2026-123850