Formbricks before 4.9.0 contains an authorization bypass vulnerability in server actions like resetSurveyAction and updateSegmentAction that fail to verify resource ownership against the supplied organizationId. Authenticated owners or managers of any organization can pair their own organization identifier with victim resource IDs to delete survey responses, modify segments and quotas, or alter pending invitations.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
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
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 6
https://github.com/formbricks/formbricks/blob/4.8.7/apps/web/app/(app)/environm…
disclosure@vulncheck.com
https://github.com/formbricks/formbricks/blob/4.8.7/apps/web/modules/organizati…
disclosure@vulncheck.com
https://github.com/formbricks/formbricks/commit/c7faa29437ea706eae411958b260bb5…
disclosure@vulncheck.com
https://github.com/formbricks/formbricks/issues/7326
disclosure@vulncheck.com
https://github.com/formbricks/formbricks/releases/tag/4.9.0
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/formbricks-before-4.9.0-cross-organization…
disclosure@vulncheck.com