CVE-2026-56244 Capgo - Webhook Signing Secret Disclosure via Non-Admin API Key
Non-admin API keys can read webhook signing secrets, allowing attackers to forge authenticated webhook events and bypass integrity checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-56244?
CVE-2026-56244 is a high-severity vulnerability in Capgo, published on 24 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-200
Which versions are affected by CVE-2026-56244?
How do I fix CVE-2026-56244?
No fix has been published for CVE-2026-56244 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-56244 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-56244 exists.
Sources
Also known as GHSA-qrrx-x3qf-x87v.