What is CVE-2026-59791?

CVE-2026-59791 is a low-severity vulnerability in Jetbrains Youtrack, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 3.5/10. Published 2026-07-10.

How severe is CVE-2026-59791?

Low severity. CVSS v3 base score is 3.5 out of 10.

Vulnerability in Jetbrains Youtrack

CVE-2026-59791

In JetBrains YouTrack before 2026.2.17012 cSS injection via Mermaid diagram rendering was possible

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

Affected products

Jetbrains Youtrack — versions 0

Weakness classification (CWE)

CWE-1021 — Improper Restriction of Rendered UI Layers or Frames (Clickjacking)

References

cve@jetbrains.com

Frequently asked questions

What is CVE-2026-59791?: CVE-2026-59791 is a low-severity vulnerability in Jetbrains Youtrack, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 3.5/10. Published 2026-07-10.
How severe is CVE-2026-59791?: Low severity. CVSS v3 base score is 3.5 out of 10.