Formbricks

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.

Published: 2026-10-14T14:16:57.917Z
Updated: 2026-10-26T16:12:38.788Z

A security vulnerability has been detected in Formbricks 5.0.0. This impacts an unknown function of the file apps/web/modules/survey/link/actions.ts of the component Survey Handler. The manipulation leads to improper access controls. Remote exploitation of the attack is possible. Upgrading to version 5.1.0-rc.1 will fix this issue. The identifier of the patch is af6023b5ac3b030ffcea24fac799f76f3e3512c6. You should upgrade the affected component.

Published: 2026-07-06T03:00:11.234Z
Updated: 2026-07-07T02:59:38.314Z

Formbricks is an open source qualtrics alternative. Prior to version 4.0.1, Formbricks is missing JWT signature verification. This vulnerability stems from a token validation routine that only decodes JWTs (jwt.decode) without verifying their signatures. Both the email verification token login path and the password reset server action use the same validator, which does not check the token’s signature, expiration, issuer, or audience. If an attacker learns the victim’s actual user.id, they can craft an arbitrary JWT with an alg: "none" header and use it to authenticate and reset the victim’s password. This issue has been patched in version 4.0.1.

Published: 2025-09-26T23:03:30.995Z
Updated: 2025-09-29T14:59:51.354Z