CVE-2026-56244

Description

Capgo before 12.128.2 allows non-admin API keys to read webhook signing secrets via Supabase REST due to insufficient row-level security policies on the webhooks table. Attackers can retrieve the webhook secret and forge valid X-Capgo-Signature headers to send authenticated webhook events to configured receivers, breaking webhook authenticity and integrity.

CVSS Vector

References

• https://github.com/Cap-go/capgo/security/advisories/GHSA-qrrx-x3qf-x87v
• https://www.vulncheck.com/advisories/capgo-webhook-signing-secret-disclosure-via-non-admin-api-key
• https://github.com/Cap-go/capgo/security/advisories/GHSA-qrrx-x3qf-x87v