What is CVE-2026-75048?

CVE-2026-75048 is a high-severity vulnerability in Jetbrains Youtrack, classified under Cross-site Scripting. CVSS score: 8.2/10. Published 2026-08-17.

How severe is CVE-2026-75048?

High severity. CVSS v3 base score is 8.2 out of 10.

XSS in Jetbrains Youtrack

CVE-2026-75048

In JetBrains YouTrack before 2026.2.18068 stored XSS via the fenced code-block language label was possible

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-08-17 · last modified 2026-09-15.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (22.5th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Jetbrains Youtrack — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.jetbrains.com/privacy-security/issues-fixed/ (Vendor Advisory)

Frequently asked questions

What is CVE-2026-75048?: CVE-2026-75048 is a high-severity vulnerability in Jetbrains Youtrack, classified under Cross-site Scripting. CVSS score: 8.2/10. Published 2026-08-17.
How severe is CVE-2026-75048?: High severity. CVSS v3 base score is 8.2 out of 10.