JetBrains YouTrack < 2026.2.19197 Multiple Vulnerabilities

high Nessus Plugin ID 362483

Synopsis

The remote host is affected by multiple vulnerabilities.

Description

The version of JetBrains YouTrack installed on the remote host is prior to 2026.2.19197. It is, therefore, affected by multiple vulnerabilities:

- In JetBrains YouTrack before 2026.2.19197 account takeover was possible by replaying a notification signature. (CVE-2026-100277)

- In JetBrains YouTrack before 2026.2.19197 project Admin could trigger DoS via a notification template.
(CVE-2026-100274)

- In JetBrains YouTrack before 2026.2.19197 stored XSS in the workflow error notification toast was possible. (CVE-2026-100275)

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 2026.2.19197, or later.

Plugin Details

Severity: High

ID: 362483

File Name: jetbrains_youtrack_2026_2_19197.nasl

Version: 1.2

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 10/2/2026

Updated: 10/2/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.18

CVSS v2

Risk Factor: High

Base Score: 7.3

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

CVSS Score Source: CVE-2026-100277

CVSS v3

Risk Factor: High

Base Score: 8.9

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

Vulnerability Information

CPE: cpe:/a:jetbrains:youtrack

Required KB Items: installed_sw/JetBrains YouTrack

Patch Publication Date: 9/30/2026

Vulnerability Publication Date: 9/30/2026

Reference Information

CVE: CVE-2026-100267, CVE-2026-100268, CVE-2026-100269, CVE-2026-100270, CVE-2026-100271, CVE-2026-100272, CVE-2026-100273, CVE-2026-100274, CVE-2026-100275, CVE-2026-100276, CVE-2026-100277, CVE-2026-100278, CVE-2026-100279, CVE-2026-100280

IAVA: 2026-A-1066

Detections

Analytics