CVE-2026-55641
CVE-2026-55641 · 9router: Unauthenticated `/v1` proxy access via `Host`-header spoofing → open AI relay + SSRF
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9Router is an AI router & token saver. Prior to 0.5.2, 9router determines whether a /v1 LLM proxy request is local by reading the client-controlled Host header, allowing a remote unauthenticated attacker to send Host: localhost and bypass API-key authentication. In the default configuration, this exposes the /v1 proxy to upstream provider calls using stored provider credentials and allows /v1/search with the searxng provider_options.baseUrl parameter to drive server-side requests to internal or cloud-metadata hosts. This issue is fixed in version 0.5.2.
CVSS 8.2 · Alta · EPSS 0,3% · Corrección disponible
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Pila tecnológica: node