CVE-2026-56739 Logto: SSRF via Webhooks and Custom OAuth2 Connector UserInfo Endpoint

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.43.0, Logto fetches administrator-controlled outbound destinations without validating the address used for the connection. Webhook delivery in packages/core/src/libraries/hook/utils.ts can reach special-use and...

CVE-2026-56739 Logto: SSRF via Webhooks and Custom OAuth2 Connector UserInfo Endpoint

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.43.0, Logto fetches administrator-controlled outbound destinations without validating the address used for the connection. Webhook delivery in packages/core/src/libraries/hook/utils.ts can reach special-use and...

CVE-2026-56739

Logto versions prior to 1.43.0 are vulnerable to Server-Side Request Forgery (SSRF) because the application fails to validate outbound destinations controlled by administrators. Specifically, Webhook delivery in packages/core/src/libraries/hook/utils.ts can access cloud metadata addresses. Additi...

CVE-2026-56739: Server-Side Request Forgery (SSRF)

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.43.0, Logto fetches administrator-controlled outbound destinations without validating the address used for the connection. Webhook delivery in packages/core/src/libraries/hook/utils.ts can reach special-use and...