What is CVE-2025-57731?

CVE-2025-57731 is a high-severity vulnerability in Jetbrains Youtrack, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2025-08-20.

How severe is CVE-2025-57731?

High severity. CVSS v3 base score is 8.7 out of 10.

XSS in Jetbrains Youtrack

CVE-2025-57731

In JetBrains YouTrack before 2025.2.92387 stored XSS was possible via Mermaid diagram content

Vulnerability class: XSS (Cross-Site Scripting)

Published 2025-08-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (19.8th percentile), scored 2026-10-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

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-2025-57731?: CVE-2025-57731 is a high-severity vulnerability in Jetbrains Youtrack, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2025-08-20.
How severe is CVE-2025-57731?: High severity. CVSS v3 base score is 8.7 out of 10.