What is CVE-2026-86483?

CVE-2026-86483 is a medium-severity vulnerability in Jetbrains Youtrack, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-09-07.

How severe is CVE-2026-86483?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Jetbrains Youtrack

CVE-2026-86483

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

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Jetbrains Youtrack

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@jetbrains.com

Frequently asked questions

What is CVE-2026-86483?: CVE-2026-86483 is a medium-severity vulnerability in Jetbrains Youtrack, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-09-07.
How severe is CVE-2026-86483?: Medium severity. CVSS v3 base score is 5.4 out of 10.