Leantime before 3.9.6 contains an authorization bypass vulnerability in the HTMX plugin install endpoint that lacks permission validation. Authenticated users with limited roles can install marketplace plugins and control arbitrary properties including identifier, version, and license key to deploy malicious plugins.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 7
https://github.com/Leantime/leantime
disclosure@vulncheck.com
https://github.com/Leantime/leantime/blob/v3.9.5/app/Domain/Plugins/Controllers…
disclosure@vulncheck.com
https://github.com/Leantime/leantime/blob/v3.9.5/app/Domain/Plugins/Hxcontrolle…
disclosure@vulncheck.com
https://github.com/Leantime/leantime/blob/v3.9.5/app/Domain/Plugins/Services/Pl…
disclosure@vulncheck.com
https://github.com/Leantime/leantime/blob/v3.9.6/app/Domain/Plugins/Hxcontrolle…
disclosure@vulncheck.com
https://github.com/Leantime/leantime/issues/3757
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/leantime-before-3.9.6-unauthorized-plugin-…
disclosure@vulncheck.com