{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","favicon":"https://feed.craftedsignal.io/favicon-32x32.png","feed_url":"https://feed.craftedsignal.io/products/mcp-rdf-explorer-1.0.0/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":7.3,"id":"CVE-2026-19753"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["mcp-rdf-explorer (1.0.0)"],"_cs_severities":["high"],"_cs_tags":[],"_cs_type":"advisory","_cs_vendors":["Model Context Protocol"],"content_html":"\u003cp\u003eCVE-2026-19753 is a server-side request forgery (SSRF) vulnerability affecting the mcp-rdf-explorer component (version 1.0.0) of the Model Context Protocol MCP Server. The flaw resides in the 'explore_url' function located in 'src/mcp-rdf-explorer/server.py'. An unauthenticated, remote attacker can manipulate the 'url' argument passed to this function to bypass internal security controls and force the application to make arbitrary HTTP requests. This vulnerability is of high concern because it permits potential interaction with internal services or metadata endpoints not intended for public access. As of August 2026, the exploit is public and the vendor has not provided a patch.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker identifies an internet-facing service running the vulnerable mcp-rdf-explorer 1.0.0 component.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious request containing a controlled URI within the 'url' argument parameter.\u003c/li\u003e\n\u003cli\u003eThe request is sent to the MCP server's application endpoint associated with the 'explore_url' function.\u003c/li\u003e\n\u003cli\u003eThe application receives the input and fails to validate or sanitize the URI before passing it to the internal request handler.\u003c/li\u003e\n\u003cli\u003eThe server executes a backend request to the attacker-supplied destination.\u003c/li\u003e\n\u003cli\u003eThe response from the internal service or external target is processed or returned to the attacker.\u003c/li\u003e\n\u003cli\u003eAttacker successfully performs SSRF to exfiltrate internal metadata or interact with unreachable network segments.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability allows an attacker to perform unauthorized actions on behalf of the server, potentially exposing internal-only network resources or credentials. Given the nature of SSRF, this may lead to further lateral movement within the environment, scanning of internal infrastructure, or unauthorized access to cloud metadata services.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eImmediately restrict access to the mcp-rdf-explorer server component by placing it behind a reverse proxy or VPN, ensuring it is not exposed to the public internet.\u003c/li\u003e\n\u003cli\u003eImplement egress filtering at the network level for the server host to prevent the application from making requests to sensitive internal subnets or local loopback addresses.\u003c/li\u003e\n\u003cli\u003eMonitor logs for unusual HTTP traffic patterns originating from the server host, specifically looking for attempts to scan internal CIDR blocks.\u003c/li\u003e\n\u003cli\u003eReview all deployments of mcp-rdf-explorer 1.0.0 for potential indicators of exploitation or unauthorized usage until a patch is available.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-08-14T00:07:02Z","date_published":"2026-08-14T00:07:02Z","id":"https://feed.craftedsignal.io/briefs/2026-08-mcp-rdf-explorer-ssrf/","summary":"A server-side request forgery (SSRF) vulnerability in the mcp-rdf-explorer MCP server allows remote, unauthenticated attackers to force the server to initiate unauthorized requests.","title":"SSRF Vulnerability in Model Context Protocol mcp-rdf-explorer","url":"https://feed.craftedsignal.io/briefs/2026-08-mcp-rdf-explorer-ssrf/"}],"language":"en","title":"CraftedSignal Threat Feed - Mcp-Rdf-Explorer (1.0.0)","version":"https://jsonfeed.org/version/1.1"}