{"answers":{"affected":"2 open source packages ship an affected version, including mcp-searxng.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-58483 exists.","fix":"Upgrade mcp-searxng to 1.7.1 or later.","what":"CVE-2026-58483 is a high-severity denial of service vulnerability in ihor-sokoliuk mcp-searxng, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-58483 and fix it if it is affected.\n\nWhat it is: CVE-2026-58483 is a high-severity denial of service vulnerability in ihor-sokoliuk mcp-searxng, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-58483 exists.\n\nAffected packages and fixed versions:\n- mcp-searxng (npm): affected all versions; fixed in 1.7.1\n- mcp-searxng (npm): affected all versions; fixed in 1.7.1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-58483/ (Markdown: https://insights.sbomify.com/CVE-2026-58483/index.md)","id":"CVE-2026-58483","markdown":"https://insights.sbomify.com/CVE-2026-58483/index.md","name":"CVE-2026-58483","record":{"aliases":["GHSA-xcqx-9jf5-w339"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"MCP server library","requires_auth":"none","summary":"An unauthenticated attacker can cause denial of service by forcing unbounded memory and CPU consumption via a crafted URL response in the mcp-searxng library.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"mcp-searxng is a Model Context Protocol server that gives AI assistants web search and URL-reading capabilities through SearXNG. Prior to 1.7.1, web_url_read in src/index.ts passes a caller-supplied URL to readUrlContent() in src/url-reader.ts, where checkContentLength() treats a missing Content-Length header as an inconclusive preflight and the normal and error paths then consume the complete body with response.text(). A server that omits Content-Length can therefore bypass URL_READ_MAX_CONTENT_LENGTH_BYTES and force unbounded memory use. The resulting string is also processed by NodeHtmlMarkdown.translate(), increasing CPU consumption and allowing an unauthenticated HTTP client to cause denial of service. This issue is fixed in version 1.7.1.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"mcp-searxng: Unbounded Response Body Read Bypasses URL Size Limit in `web_url_read`","id":"CVE-2026-58483","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":4,"next":{"headline":"Network-AI: Poisoned environment backup manifest allows arbitrary recursive deletion during backup pruning","id":"CVE-2026-58484"},"packages":[{"ecosystem":"npm","fixed":["1.7.1"],"introduced":["0"],"last_affected":[],"package":"mcp-searxng","purl":null,"source":"GHSA-xcqx-9jf5-w339"},{"ecosystem":"npm","fixed":["1.7.1"],"introduced":["0"],"last_affected":[],"package":"mcp-searxng","purl":"pkg:npm/mcp-searxng","source":"GHSA-xcqx-9jf5-w339"}],"prev":{"headline":"Network-AI: ApprovalInbox HTTP server has no authentication — anyone can approve pending agent actions","id":"CVE-2026-58482"},"products":["mcp-searxng"],"published":"2026-09-15","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-15","vendors":["ihor-sokoliuk"]},"summary":"An unauthenticated attacker can cause denial of service by forcing unbounded memory and CPU consumption via a crafted URL response in the mcp-searxng library.","url":"https://insights.sbomify.com/CVE-2026-58483/"}