SB20260907140 - Multiple vulnerabilities in YouTrack

Description

This security bulletin contains information about 2 vulnerabilities.

1) Insertion of Sensitive Information Into Sent Data (CVE-ID: CVE-2026-86497)

CWE-ID: CWE-201 - Insertion of Sensitive Information Into Sent Data

CVSSv4: 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]

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.

2) Missing Authorization (CVE-ID: CVE-2026-86496)

CWE-ID: CWE-862 - Missing Authorization

CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to disclose reporter email addresses.

The vulnerability exists due to missing authorization in Helpdesk authorized reporters when accessing reporter information. A remote user can access reporter email addresses to disclose reporter email addresses.

Remediation

Install update from vendor's website.

References

• https://www.jetbrains.com/privacy-security/issues-fixed/#b755c6029b178e38038fd23012cde594
• https://www.jetbrains.com/privacy-security/issues-fixed/#242c1807c225245c9eb5f71d44b4f964