CVE-2026-56252 Details
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.
A scope isolation vulnerability has been identified in Capgo versions prior to 12.128.2. This vulnerability allows app-scoped API keys to perform org-scoped webhook operations by invoking the POST /webhooks/test endpoint. The issue arises because the authorization check for this endpoint does not properly enforce app scope, enabling attackers with app-scoped credentials to trigger signed outbound webhook deliveries for any organization webhook, thereby bypassing the intended authorization restrictions.
Users are advised to update Capgo to version 12.128.2 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 12, 2026CISA-ADP
Assessed Jul 13, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Cap-go/capgo/security/advisories/GHSA-qvr7-f6j6-64wp | CISA-ADP | AdvisoryExploitTechnical AnalysisVendor |
| https://github.com/Cap-go/capgo/security/advisories/GHSA-qvr7-f6j6-64wp | [email protected] | AdvisoryExploitTechnical AnalysisVendor |
| https://www.vulncheck.com/advisories/capgo-scope-isolation-failure-in-webhook-test-endpoint | [email protected] | AdvisoryVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-863 | Incorrect Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Capgo | < 12.128.2 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 13, 2026 | CVE Modified | CISA-ADP |
| Jul 12, 2026 | New CVE Received | [email protected] |