CVE-2026-65056
HighCVSS 8.2Exploitation Probability (EPSS)
Low risk14th percentile - higher than 14% of all known CVEs
Summary
SSRF vulnerability in mcp-webresearch 0.1.7 allows attackers to access internal network services by supplying loopback, link-local, or cloud metadata addresses to the visit_page tool. The attack can expose sensitive data, including credentials.
Risk Assessment
Risk of leakage of confidential information from internal services, including cloud credentials, which could lead to further attacks.
Recommendation
Update mcp-webresearch to the latest version. Restrict access to the visit_page tool and filter IP addresses in requests.
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Original NVD description (English source)
mcp-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.

