CVE-2026-56079
MEDIUMCapgo - Cross-Tenant Authorization Bypass via PostgREST Webhook Access
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GHSA Advisory GHSA-hj3h-v877-g5rx
https://github.com/Cap-go/capgo/security/advisories/GHSA-hj3h-v877-g5rx
Third Party Advisory third-party-advisory
VulnCheck Advisory: Capgo - Cross-Tenant Authorization Bypass via PostgREST Webhook Access
https://www.vulncheck.com/advisories/capgo-cross-tenant-authorization-bypass-via-postgrest-webhook-access
Scores
CVSS v3
6.5
EPSS
0.0024
EPSS Percentile
15.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-200
Status
published
Products (2)
Capgo/Capgo
< 12.128.2
Capgo/Capgo
12.128.2
Published
Jun 19, 2026
Tracked Since
Jun 20, 2026