{"id":"CVE-2025-5276","aliases":["GHSA-frq9-3hp2-xvxg"],"url":"https://o3.security/vulnerability/CVE-2025-5276","summary":"Markdownify MCP Server allows Server-Side Request Forgery (SSRF) via the Markdownify.get() function","details":"Versions of the package mcp-markdownify-server before 1.0.0 are vulnerable to Server-Side Request Forgery (SSRF) via the Markdownify.get() function. An attacker can craft a prompt that, once accessed by the MCP host, can invoke the webpage-to-markdown, bing-search-to-markdown, and youtube-to-markdown tools to issue requests and read the responses to attacker-controlled URLs, potentially leaking sensitive information.","published":"2025-05-29T05:00:05.001Z","modified":"2026-08-07T11:31:34.665561496Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"mcp-markdownify-server","fixedVersion":null}],"fix":{"url":"https://github.com/zcaceres/markdownify-mcp/commit/0284aa8f34d32c65e20d8cda2d429b7943c9af03","label":"zcaceres/markdownify-mcp@0284aa8"},"references":[{"type":"WEB","url":"https://github.com/zcaceres/markdownify-mcp/blob/224cf89f0d58616d2a5522f60f184e8391d1c9e3/src/server.ts%23L20C17-L20C29"},{"type":"WEB","url":"https://security.snyk.io/vuln/SNYK-JS-MCPMARKDOWNIFYSERVER-10249387"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/5xxx/CVE-2025-5276.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-5276"},{"type":"FIX","url":"https://github.com/zcaceres/markdownify-mcp/commit/0284aa8f34d32c65e20d8cda2d429b7943c9af03"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:31:34.665561496Z"}}