FlareSolverr before version 3.4.7 contains a server-side request forgery (SSRF) vulnerability in the /v1 API endpoint. This allows a remote attacker to obtain sensitive information

The following non-blocking warnings were raised during the lint phase of this triage (e.g. reference URLs not yet on the allowlist). They do not affect entry usability and are disclosed for transparency (see DR-002).

• REF_URL_NOT_ALLOWLISTED url not in allowlist: https://xinyi234.github.io/2026/04/13/FlareSolverr-Server-Side-Request-Forgery-SSRF-Vulnerability-Report/