CVE-2026-46611: Xmlrpc Server Dns Rebinding

The request handler overrides `parse_request` but does not validate the HTTP `Host` header. Without checking the `Host` header before processing requests or authenticating clients, the server is vulnerable to DNS rebinding attacks if it is bound to localhost or an internal network. Attackers can extract data or call APIs from the local server via a victim's

Provally CuratedPublic repositoryMediumMedium confidenceVerifiedApache-2.0Python
greprules fetch cve-2026-46611-xmlrpc-server-dns-rebinding --engine opengrep

Description

The request handler overrides `parse_request` but does not validate the HTTP `Host` header. Without checking the `Host` header before processing requests or authenticating clients, the server is vulnerable to DNS rebinding attacks if it is bound to localhost or an internal network. Attackers can extract data or call APIs from the local server via a victim's