CVE-2026-33975: Server-Side Request Forgery (SSRF)

Twenty is an open source CRM built with NestJS Node.js. In versions 1.18.0 and earlier, the SSRF protection in twenty-server's SecureHttpClientService can be bypassed using IPv4-mapped IPv6 addresses in URL IP literals. Node.js's URL parser normalizes IPv4-mapped IPv6 addresses to compressed hex...

CVE-2026-27023

Twenty is an open source CRM. Prior to version 1.18, the SSRF protection in SecureHttpClientService validated request URLs at the request level but did not validate redirect targets. An authenticated user who could control outbound request URLs e.g., webhook endpoints, image URLs could bypass...

CVE-2026-27023 Twenty: SSRF protection bypass via HTTP redirect following in secure HTTP client

Twenty is an open source CRM. Prior to version 1.18, the SSRF protection in SecureHttpClientService validated request URLs at the request level but did not validate redirect targets. An authenticated user who could control outbound request URLs e.g., webhook endpoints, image URLs could bypass...

CVE-2026-27023: Server-Side Request Forgery (SSRF)

Twenty is an open source CRM. Prior to version 1.18, the SSRF protection in SecureHttpClientService validated request URLs at the request level but did not validate redirect targets. An authenticated user who could control outbound request URLs e.g., webhook endpoints, image URLs could bypass...