CVE-2026-110620CWE-639

CVE-2026-110620

Medium · published October 14, 2026

CVSS v3.1
6.8
EPSS
1%
Percentile
45.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
CVSS v4.0
6.1 · CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00558 · 45.7th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-10-14T19:17Z
References (6)
https://github.com/formbricks/formbricks/blob/4.8.7/apps/web/app/(app)/environments/%5BenvironmentId%5D/surveys/%5BsurveyId%5D/(analysis)/summary/actions.ts#L65-L95 · [email protected]https://github.com/formbricks/formbricks/blob/4.8.7/apps/web/modules/organization/settings/teams/actions.ts#L33-L50 · [email protected]https://github.com/formbricks/formbricks/commit/c7faa29437ea706eae411958b260bb5ad5c60e4f · [email protected]https://github.com/formbricks/formbricks/issues/7326 · [email protected]https://github.com/formbricks/formbricks/releases/tag/4.9.0 · [email protected]https://www.vulncheck.com/advisories/formbricks-before-4.9.0-cross-organization-idor-in-server-actions-via-organizationid · [email protected]
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 1%
    epss
  • 14 OCT 14:16Z
    Formbricks before 4.9.0 Cross-Organization IDOR in Server Actions via organizationId
    cvelistv5
  • 14 OCT 14:16Z
    Formbricks before 4.9.0 Cross-Organization IDOR in Server Actions via organizationId
    cvelistv5