CVE-2026-56252 PUBLISHED

Capgo - Scope Isolation Failure in Webhook Test Endpoint

Assigner: VulnCheck
Reserved: 19.06.2026 Published: 12.07.2026 Updated: 12.07.2026

Capgo before 12.128.2 contains a scope isolation vulnerability in the POST /webhooks/test endpoint that allows app-scoped API keys to invoke org-scoped webhook operations. Attackers with app-scoped credentials can trigger signed outbound webhook deliveries for arbitrary organization webhooks outside their declared app boundary, bypassing the limited_to_apps authorization check.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS Score: 5.3

Product Status

Vendor Capgo
Product Capgo
Versions Default: unaffected
  • affected from 0 to 12.128.2 (excl.)
  • Version 12.128.2 is unaffected

Credits

  • Judel777 reporter

References

Problem Types

  • Incorrect Authorization CWE