SB2026081788 - Multiple vulnerabilities in YouTrack

Description

This security bulletin contains information about 2 vulnerabilities.

1) Authorization bypass through user-controlled key (CVE-ID: CVE-2026-49386)

CWE-ID: CWE-639 - Authorization Bypass Through User-Controlled Key

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 restricted issue and article information.

The vulnerability exists due to improper access control in Planning Canvas when handling requests for restricted issues and articles. A remote user can access Planning Canvas to enumerate restricted issues and articles to disclose restricted issue and article information.

2) Missing Authorization (CVE-ID: CVE-2026-49385)

CWE-ID: CWE-862 - Missing Authorization

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

The vulnerability allows a remote user to modify service accounts.

The vulnerability exists due to improper access control in service account management when handling modification requests. A remote user can modify service accounts to modify service accounts.

Low-privileged users are able to perform the unauthorized action.

Remediation

Install update from vendor's website.

References

• https://www.jetbrains.com/privacy-security/issues-fixed/#a9e0d9afd85d7b9dbbdc07131dd89d0d
• https://www.jetbrains.com/privacy-security/issues-fixed/#e875290e0b2b44d8729a2598947783a1