---
id: CVE-2026-56079
title: Capgo - Cross-Tenant Authorization Bypass via PostgREST Webhook Access
summary: >-
  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…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-200
vendor: Capgo
product: Capgo
affected:
  - Capgo < 12.128.2
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-22T17:44:53.103003Z'
exploitAvailable: true
published: '2026-06-19'
updated: '2026-11-08'
sourceUpdated: '2026-11-08T14:05:28.082Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-56079'
references:
  - url: 'https://github.com/Cap-go/capgo/security/advisories/GHSA-hj3h-v877-g5rx'
    label: GitHub Security Advisory (GHSA-hj3h-v877-g5rx)
  - url: >-
      https://www.vulncheck.com/advisories/capgo-cross-tenant-authorization-bypass-via-postgrest-webhook-access
    label: >-
      VulnCheck Advisory: Capgo - Cross-Tenant Authorization Bypass via
      PostgREST Webhook Access
tags:
  - cve.org
  - exploit-available
epss: 0.00409
epssPercentile: 0.35456
ingestedAt: '2026-11-08T14:51:22.371Z'
---

## Overview

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.

## Affected

- `Capgo < 12.128.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.