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Medium · 6.8 CVE-2026-82263 EUVD-2026-67794GHSA-2c8c-r4jf-gp34

Logto Server-Side Request Forgery via OIDC SSO Connector Issuer URL

Published Aug 28, 2026 · Updated Sep 24, 2026 · Assigned by VulnCheck

Description

Logto through 1.42.0 contains a server-side request forgery vulnerability in the OIDC SSO connector creation endpoint that fails to validate the issuer URL parameter. Tenant administrators with Management API credentials can supply arbitrary internal URLs to trigger HTTP GET requests to private network services, with response content returned in API responses.

Affected products

VendorProductAffectedFixed
logto-io logto ≤ 1.42.0 —

References