Insecure Default Initialization of Resource in YouTrack - CVE-2026-100260
Published: October 2, 2026
Vulnerability identifier: #VU153139
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-100260
CWE-ID: CWE-1188
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to authenticate after a password reset.
The vulnerability exists due to insecure default initialization of a resource in the mailbox integration when processing authentication requests after a password reset. A remote attacker can use the mailbox integration to authenticate after a password reset.
Affected software
YouTrack
How to mitigate CVE-2026-100260
Install security update from vendor's website.
YouTrack - update to 2026.2.18991