CVE-2026-56079 Capgo - Cross-Tenant Authorization Bypass via PostgREST Webhook Access
Attackers can bypass tenant isolation to steal webhook secrets and forge events, compromising data integrity and confidentiality in Capgo.
- 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-2026-56079?
CVE-2026-56079 is a high-severity missing authorization vulnerability in Capgo, published on 19 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 contains a cross-tenant authorization bypass vulnerability in PostgREST endpoints that allows org-scoped read API keys to access other tenants' webhook secrets and delivery logs. Attackers can query the webhooks and webhook_deliveries endpoints to exfiltrate HMAC signing secrets and delivery payloads, enabling forged webhook events against victim organizations.
Weakness: CWE-200
Which versions are affected by CVE-2026-56079?
How do I fix CVE-2026-56079?
No fix has been published for CVE-2026-56079 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-56079 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-56079 exists.
Sources
Also known as GHSA-7hf5-4jq6-894f, GHSA-hj3h-v877-g5rx.