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Vulnerabilities CVE-2026-56252

CVE-2026-56252

Medium
Open
TLP:CLEAR

Capgo - Scope Isolation Failure in Webhook Test Endpoint

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Description

Capgo before 12.128.2 contains a scope isolation vulnerability in the POST /webhooks/test endpoint that allows app-scoped API keys to invoke org-scoped webhook operations. Attackers with app-scoped credentials can trigger signed outbound webhook deliveries for arbitrary organization webhooks outside their declared app boundary, bypassing the limited_to_apps authorization check.

Details

CVSS Score
5.3
EPSS Score
0.17%

6.6th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Confidence
90%
Published
Jul 12, 2026
Last Modified
Jul 13, 2026
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