CVE-2026-100262 JetBrains YouTrack - Broken Access Control

JetBrains YouTrack < 2026.2.18991 contains a broken access control vulnerability caused by missing authorization checks, letting users with read-only project access overwrite project notification templates, exploit requires read-only project access.

CVSS base score 7.6 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.21% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Data Tampering
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
Published
30 September 2026
Updated
15 October 2026
Weakness
CWE-863

Vendor fix

Update to version 2026.2.18991 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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