PatchSiren cyber security CVE debrief
CVE-2026-56227 Capgo CVE debrief
CVE-2026-56227 is a medium-severity server-side request forgery (SSRF) vulnerability in Capgo versions before 12.128.2. The issue arises from inadequate webhook URL validation, permitting organization admins to configure webhooks pointing to localhost or 127.0.0.1. When triggered, the backend performs outbound requests to these addresses, disclosing error responses to users. Defenders should assess their exposure, focusing on webhook configurations and potential internal network impacts. Given the medium CVSS score of 5.3, this issue warrants attention but may not require immediate action unless specific organizational risks are present.
- Vendor
- Capgo
- Product
- Unknown
- CVSS
- MEDIUM 5.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-06-20
- Original CVE updated
- 2026-06-22
- Advisory published
- 2026-06-20
- Advisory updated
- 2026-06-22
Who should care
IT administrators and security teams managing Capgo instances, especially those with webhook configurations pointing to internal addresses, should evaluate their exposure and consider updating to version 12.128.2 or later. Additionally, organizations using Capgo for internal services or with high-security requirements should prioritize assessment and mitigation.
Technical summary
The CVE-2026-56227 vulnerability in Capgo allows for SSRF attacks due to insufficient validation of webhook URLs. This could enable attackers to manipulate internal services, potentially leading to unauthorized data access or service disruption. The vulnerability's CVSS vector is 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X, indicating a medium severity level.
Defensive priority
Medium priority due to potential for internal network exploitation
Recommended defensive actions
- Inventory Capgo instances and verify webhook configurations
- Review and restrict webhook URLs to prevent internal address access
- Update Capgo to version 12.128.2 or later
- Monitor for suspicious outbound requests from Capgo instances
- Implement compensating controls for internal services if updating is not feasible
Evidence notes
The primary evidence for this vulnerability comes from the NVD and CVE.org records. The vulnerability affects Capgo versions before 12.128.2. Defenders should verify webhook configurations and assess potential internal network impacts. Evidence limits suggest focusing on official advisories and vendor documentation for detailed mitigation steps.
Official resources
This article was generated with AI assistance based on the supplied source corpus and is intended for informational purposes only.