What is CVE-2026-103488?

CVE-2026-103488 is a high-severity vulnerability in Jetbrains Youtrack, classified under Incorrect Authorization. CVSS score: 7.1/10. Published 2026-10-01.

How severe is CVE-2026-103488?

High severity. CVSS v3 base score is 7.1 out of 10.

Auth bypass in Jetbrains Youtrack

CVE-2026-103488

In JetBrains YouTrack before 2026.2.19422 missing authorisation allowed authenticated users to add themselves to project teams and access restricted issues

Vulnerability class: Broken Access Control

Published 2026-10-01 · last modified 2026-10-01.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

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-2026-103488?: CVE-2026-103488 is a high-severity vulnerability in Jetbrains Youtrack, classified under Incorrect Authorization. CVSS score: 7.1/10. Published 2026-10-01.
How severe is CVE-2026-103488?: High severity. CVSS v3 base score is 7.1 out of 10.