Main Vulnerability Database Vulnerabilities #VU153271

Authorization bypass through user-controlled key in Leantime - #VU153271

Published: October 5, 2026 / Updated: October 5, 2026

Vulnerability identifier: #VU153271

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: N/A

CWE-ID: CWE-639

Exploitation vector: Remote access

Exploit availability: Public exploit is available

Vulnerability details

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to improper authorization in the self-service profile update functionality. A remote user can change another user's password and takeover target account.

Affected software

Leantime

Remediation

Install updates from vendor's website.

Leantime - update to 3.9.0

Links to Public Exploits and PoC-codes

Exploit #13110 - Account takeover via IDOR in self-service profile update (any authenticated user can change another user\'s password) (October 5, 2026)

External References

https://github.com/Leantime/leantime/security/advisories/GHSA-5447-phq9-qjmm

Related Security Bulletins

Authorization bypass through user-controlled key in Leantime