23 Oct 2026 15:48:27 UTC
mcp-webresearch Server-Side Request Forgery in visit_page Due to Missing Internal-IP Filtering
cve-program · CVE-2026-65056 · Published
CVE-2026-65056
mcp-webresearch Server-Side Request Forgery in visit_page Due to Missing Internal-IP Filtering
CVSS 4.0 8.3 HIGHCVSS 3.1 8.2 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-65056
Publishedmcp-webresearch 0.1.7 contains a server-side request forgery vulnerability that allows attackers to access internal network services by supplying loopback, link-local, or cloud metadata addresses to the visit_page tool, which only validates the URL protocol without filtering private or reserved IP ranges. Attackers can steer the LLM-controlled URL argument through prompt injection to navigate the server's Playwright browser to internal endpoints such as cloud instance metadata services, causing the server to return sensitive internal page content including credentials into the model context.
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