What is CVE-2026-100264?

CVE-2026-100264 is a low-severity vulnerability in Jetbrains Youtrack, classified under Insufficiently Protected Credentials. CVSS score: 2.7/10. Published 2026-09-30.

How severe is CVE-2026-100264?

Low severity. CVSS v3 base score is 2.7 out of 10.

Vulnerability in Jetbrains Youtrack

CVE-2026-100264

In JetBrains YouTrack before 2026.2.18991 stored SMTP server credentials could be disclosed by changing the server host

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

CVSS v3 metric

CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/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-522 — Insufficiently Protected Credentials

References

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

Frequently asked questions

What is CVE-2026-100264?: CVE-2026-100264 is a low-severity vulnerability in Jetbrains Youtrack, classified under Insufficiently Protected Credentials. CVSS score: 2.7/10. Published 2026-09-30.
How severe is CVE-2026-100264?: Low severity. CVSS v3 base score is 2.7 out of 10.