What is CVE-2026-57921?

CVE-2026-57921 is a medium-severity vulnerability in Jetbrains Youtrack, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-06-26.

How severe is CVE-2026-57921?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Jetbrains Youtrack

CVE-2026-57921

In JetBrains YouTrack before 2026.2.16593 improper access control allowed reading users' private data via the comment templates endpoint

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Jetbrains Youtrack — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

cve@jetbrains.com

Frequently asked questions

What is CVE-2026-57921?: CVE-2026-57921 is a medium-severity vulnerability in Jetbrains Youtrack, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-06-26.
How severe is CVE-2026-57921?: Medium severity. CVSS v3 base score is 4.3 out of 10.