CVE-2026-56079

Medium

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.

SeverityMedium

CVSS6.5

Exploit probability—

ProductCapgo

PublishedJun 19, 2026

First seenJun 19, 2026

Weakness typeCWE-200Sensitive information exposure

How to fix

Update

Capgo Capgo12.128.2 or later

Vendor advisories

github.com/Cap-go/capgo/security/advisories/GHSA-hj3h-v877-g5rx

Affected products

Product	Affected versions	Fixed in
Capgo Capgo	v < 12.128.2	12.128.2

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