CVE-2026-56227
5.3
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
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Capgo | Capgo | 0 < 12.128.2 | affected |
| Capgo | Capgo | 12.128.2 | unaffected |
Weaknesses
- CWE-918: Server-Side Request Forgery (SSRF)
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: partial
Additional References
References
- https://github.com/Cap-go/capgo/security/advisories/GHSA-48hc-53hv-6x3f
- https://www.vulncheck.com/advisories/capgo-server-side-request-forgery-via-webhook-url-validation
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