What is CVE-2026-100274?

CVE-2026-100274 is a medium-severity vulnerability in Jetbrains Youtrack, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-09-30.

How severe is CVE-2026-100274?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Jetbrains Youtrack

CVE-2026-100274

In JetBrains YouTrack before 2026.2.19197 project Admin could trigger DoS via a notification template

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

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

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-770 — Allocation of Resources Without Limits or Throttling

References

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

Frequently asked questions

What is CVE-2026-100274?: CVE-2026-100274 is a medium-severity vulnerability in Jetbrains Youtrack, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-09-30.
How severe is CVE-2026-100274?: Medium severity. CVSS v3 base score is 6.5 out of 10.