Detections
Analytics

JetBrains YouTrack < 2026.2.16593 Multiple Vulnerabilities

critical Nessus Plugin ID 325897

Synopsis

The remote host is affected by multiple vulnerabilities.

Description

The version of JetBrains YouTrack installed on the remote host is prior to 2026.2.16593. It is, therefore, affected by multiple vulnerabilities, including:

 - The websandbox bridge was vulnerable to a prototype pollution attack. (CVE-2026-57926)

 - Improper access control allowed reading users' private data via the comment templates endpoint.
 (CVE-2026-57921)

 - Improper authorisation in the app configurations endpoint allowed modifying project settings.
 (CVE-2026-57923)

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 2026.2.16593, or later.

See Also

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

Plugin Details

Severity: Critical

ID: 325897

File Name: jetbrains_youtrack_2026_2_16593.nasl

Version: 1.1

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 7/9/2026

Updated: 7/9/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.02

CVSS v2

Risk Factor: Critical

Base Score: 10

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

CVSS Score Source: CVE-2026-57926

CVSS v3

Risk Factor: Critical

Base Score: 9.8

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

Vulnerability Information

CPE: cpe:/a:jetbrains:youtrack

Required KB Items: installed_sw/JetBrains YouTrack

Patch Publication Date: 6/26/2026

Vulnerability Publication Date: 6/26/2026

Reference Information

CVE: CVE-2026-57921, CVE-2026-57922, CVE-2026-57923, CVE-2026-57924, CVE-2026-57925, CVE-2026-57926

IAVA: 2026-A-0622