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CVE-2026-105090

Formbricks before 5.4.4 and 6 before 6.0.1 allows stored XSS.

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.4.4, 6.0.1
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: poc
  • Automatable: no
  • Technical impact: partial

Summary

Formbricks before 5.4.4 and 6 before 6.0.1 allows stored XSS. The survey-level Custom Head Scripts feature did not enforce the documented Manage permission boundary. A workspace member holding only readWrite permission could configure Custom Head Scripts on a survey, an operation the documentation restricts to the Manage role. Because the configured scripts execute in the authenticated browser session of any user who opens the affected survey, a lower-privileged member can run arbitrary JavaScript (stored cross-site scripting) in the session of higher-privileged users. Fixed versions require Manage access to modify survey Custom Head Scripts.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Formbricks Formbricks

    fixed in 5.4.4; From 6.0.0 · fixed in 6.0.1

References 4

GitHub · formbricks/formbricks

sec4check.pl