What is CVE-2026-123328?

CVE-2026-123328 is a medium-severity vulnerability in Jetbrains Youtrack, classified under Incorrect Authorization. CVSS score: 6.4/10. Published 2026-11-06.

How severe is CVE-2026-123328?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Auth bypass in Jetbrains Youtrack

CVE-2026-123328

In JetBrains YouTrack before 2026.2.19656 app permission bypass allowed privilege escalation via project tab

Vulnerability class: Broken Access Control

Published 2026-11-06 · last modified 2026-11-07.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (20.2th percentile), scored 2026-11-09.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

Jetbrains Youtrack

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

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

Frequently asked questions

What is CVE-2026-123328?: CVE-2026-123328 is a medium-severity vulnerability in Jetbrains Youtrack, classified under Incorrect Authorization. CVSS score: 6.4/10. Published 2026-11-06.
How severe is CVE-2026-123328?: Medium severity. CVSS v3 base score is 6.4 out of 10.