What is CVE-2026-103489?

CVE-2026-103489 is a low-severity vulnerability in Jetbrains Youtrack, classified under Cross-site Scripting. CVSS score: 2.0/10. Published 2026-10-01.

How severe is CVE-2026-103489?

Low severity. CVSS v3 base score is 2.0 out of 10.

XSS in Jetbrains Youtrack

CVE-2026-103489

In JetBrains YouTrack before 2026.2.19422 hTML injection in VCS command failure notifications was possible

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-01 · last modified 2026-10-01.

CVSS v3 metric

CVSS v3 base score 2.0 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Jetbrains Youtrack

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

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

Frequently asked questions

What is CVE-2026-103489?: CVE-2026-103489 is a low-severity vulnerability in Jetbrains Youtrack, classified under Cross-site Scripting. CVSS score: 2.0/10. Published 2026-10-01.
How severe is CVE-2026-103489?: Low severity. CVSS v3 base score is 2.0 out of 10.