What is CVE-2026-100261?

CVE-2026-100261 is a medium-severity vulnerability in Jetbrains Youtrack, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 5.4/10. Published 2026-09-30.

How severe is CVE-2026-100261?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Jetbrains Youtrack

CVE-2026-100261

In JetBrains YouTrack before 2026.2.18991 changing article visibility settings was possible without update permission

Published 2026-09-30 · last modified 2026-09-30.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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-288 — Authentication Bypass Using an Alternate Path or Channel

References

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

Frequently asked questions

What is CVE-2026-100261?: CVE-2026-100261 is a medium-severity vulnerability in Jetbrains Youtrack, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 5.4/10. Published 2026-09-30.
How severe is CVE-2026-100261?: Medium severity. CVSS v3 base score is 5.4 out of 10.