Cross-Tenant Authorization Bypass in Capgo Product by Capgo
CVE-2026-56079

7.1HIGH

Key Information:

Vendor

Capgo

Status
Capgo
Vendor
CVE Published:
19 June 2026

What is CVE-2026-56079?

A cross-tenant authorization bypass vulnerability has been identified in Capgo prior to version 12.128.2, which affects the PostgREST endpoints. Exploiting this vulnerability allows attackers utilizing organization-scoped read API keys to gain unauthorized access to webhook secrets and delivery logs belonging to other tenants. Through queries to webhooks and webhook_deliveries endpoints, attackers can potentially exfiltrate sensitive HMAC signing secrets and delivery payloads, facilitating the creation of forged webhook events targeted at unsuspecting organizations.

Affected Version(s)

Capgo 0 < 12.128.2

Capgo 12.128.2

References

https://github.com/Cap-go/capgo/security/advisories/GHSA-...
vendor-advisory
https://www.vulncheck.com/advisories/capgo-cross-tenant-a...
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Judel777
.