Auth bypass in Jetbrains Hub

CVE-2026-100266

In JetBrains Hub before 2026.2.52366 missing authorisation allowed authenticated users to send arbitrary emails from the server's trusted address

Vulnerability class: Broken Access Control

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

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/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 Hub

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

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

Frequently asked questions

What is CVE-2026-100266?: CVE-2026-100266 is a high-severity vulnerability in Jetbrains Hub, classified under Missing Authorization. CVSS score: 7.7/10. Published 2026-09-30.
How severe is CVE-2026-100266?: High severity. CVSS v3 base score is 7.7 out of 10.