Insertion of Sensitive Information Into Sent Data in YouTrack - CVE-2026-86497
Published: September 7, 2026
Vulnerability identifier: #VU147342
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-86497
CWE-ID: CWE-201
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to missing re-authentication in the mailbox host configuration functionality when changing a mailbox host. A remote user can change a mailbox host without re-authentication to disclose stored mailbox credentials.
Affected software
YouTrack
How to mitigate CVE-2026-86497
Install security update from vendor's website.
YouTrack - update to 2026.2.18769