CVE-2026-56227
Capgo - Server-Side Request Forgery via Webhook URL Validation
- State
- Published
- Severity
- 5.3 Medium
- Published
- Jun 20, 2026
- Updated
- Jun 22, 2026
- Reserved
- Jun 19, 2026
Description
Capgo before 12.128.2 contains a server-side request forgery vulnerability in webhook URL validation that allows loopback and internal addresses. Organization admins can configure webhooks pointing to localhost or 127.0.0.1, and when triggered, the backend performs outbound requests to these addresses with error responses disclosed to users.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:L | VulnCheck |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
CapgoCapgo |
|
References
- GHSA Advisory GHSA-48hc-53hv-6x3fvendor-advisory
- VulnCheck Advisory: Capgo - Server-Side Request Forgery via Webhook URL Validationthird-party-advisory
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