CVE-2026-86483
Received Received - Intake

Stored XSS in JetBrains YouTrack via Agile Board Cards

Publication date: 2026-09-07

Last updated on: 2026-09-07

Assigner: JetBrains s.r.o.

Description
In JetBrains YouTrack before 2026.2.18634 stored XSS via a custom field on Agile board cards was possible

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Meta Information

Published
2026-09-07
Last Modified
2026-09-07
Generated
2026-09-07
AI Q&A
2026-09-07
EPSS Evaluated
N/A
NVD
CVE-2026-86483
EUVD
EUVD-2026-72499

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
jetbrains youtrack to 2026.2.18634 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This vulnerability is a stored cross-site scripting (XSS) issue in JetBrains YouTrack before version 2026.2.18634. It allows an attacker to inject malicious scripts via a custom field on Agile board cards, which are then stored on the server and executed when other users view the affected cards.

Impact Analysis

This vulnerability could allow an attacker to execute arbitrary JavaScript in the context of other users' browsers when they view the affected Agile board cards. This may lead to session hijacking, data theft, or unauthorized actions performed on behalf of the user.

Mitigation Strategies

Update JetBrains YouTrack to version 2026.2.18634 or later to address the stored XSS vulnerability via custom fields on Agile board cards.

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