{"id":"CVE-2026-54689","revision":"fc9bafbfcaf44a3e80fc49d5ca59e344","records":[{"revision":"fc9bafbfcaf44a3e80fc49d5ca59e344","observedAt":"2026-10-25T13:17:28.253+00:00","statement":{"source":"nvd","id":"CVE-2026-54689","aliases":[],"title":"mcp-searxng is a Model Context Protocol server that gives AI assistants web search and URL-reading capabilities through SearXNG. Prior to 1.2.0, the web_url_read URL policy in src/url-reader.ts can be bypassed while MCP_HTTP_HARDEN is enabl…","description":"mcp-searxng is a Model Context Protocol server that gives AI assistants web search and URL-reading capabilities through SearXNG. Prior to 1.2.0, the web_url_read URL policy in src/url-reader.ts can be bypassed while MCP_HTTP_HARDEN is enabled and MCP_HTTP_ALLOW_PRIVATE_URLS is not enabled because redirect targets are not revalidated, 0.0.0.0 is not classified as an internal address, and IPv4-mapped IPv6 literals canonicalized to hexadecimal form are not recognized. These inputs allow an attacker-influenced tool call to make the MCP server fetch loopback or internal HTTP resources and return content from local services, private APIs, service-mesh endpoints, or cloud metadata endpoints. The separate hostname-to-private-address case addressed by the earlier partial fix is not part of these residual bypasses. This issue is fixed in version 1.2.0.","state":0,"publishedAt":"2026-09-15T18:17:23.477+00:00","modifiedAt":"2026-09-30T17:51:56.193+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","score":6.3,"severity":"MEDIUM"}],"references":["https://github.com/ihor-sokoliuk/mcp-searxng/commit/48e5ecdcb4166a60b94c252dbe74b0a318110ac4","https://github.com/ihor-sokoliuk/mcp-searxng/pull/79","https://github.com/ihor-sokoliuk/mcp-searxng/releases/tag/v1.2.0","https://github.com/ihor-sokoliuk/mcp-searxng/security/advisories/GHSA-wppf-h75h-6pm6"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-54689","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-200","CWE-918"],"productCriteria":[],"sourceDates":{"published":"2026-09-15T18:17:23.477","lastModified":"2026-09-30T17:51:56.193"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-54689","identifiers":["CVE-2026-54689"]},"retained":false,"historicalAffected":[]}],"coverage":[]}