What is CVE-2026-75045?

CVE-2026-75045 is a critical-severity vulnerability in Jetbrains Youtrack, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 9.1/10. Published 2026-08-17.

How severe is CVE-2026-75045?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Jetbrains Youtrack

CVE-2026-75045

In JetBrains YouTrack before 2025.3.156085, 2026.1.13913, 2026.2.18112 an unauthenticated attacker could download database backups via shared draft signature

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

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (33.7th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.7% 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: 0.004 · change: +0.001

Affected products

Jetbrains Youtrack — versions 0

Weakness classification (CWE)

CWE-288 — Authentication Bypass Using an Alternate Path or Channel

References

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

Frequently asked questions

What is CVE-2026-75045?: CVE-2026-75045 is a critical-severity vulnerability in Jetbrains Youtrack, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 9.1/10. Published 2026-08-17.
How severe is CVE-2026-75045?: Critical severity. CVSS v3 base score is 9.1 out of 10.