CVE-2026-65056
mcp-webresearch Server-Side Request Forgery in visit_page Due to Missing Internal-IP Filtering
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-918 |
| Vendor | mzxrai |
| Product | mcp-webresearch |
| Published | Jul 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None
Affected Versions
mzxrai / mcp-webresearch
0 ≤ 0.1.7
References
Credits
🔍 George Chen