{"cve":"CVE-2025-5276","nvd":{"published":"2025-05-29T05:15:21.720","modified":"2026-07-02T16:16:28.130","status":"Deferred","description":"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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:P","score":6.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","score":7.4},"cwes":["CWE-918"],"references":["https://github.com/zcaceres/markdownify-mcp/blob/224cf89f0d58616d2a5522f60f184e8391d1c9e3/src/server.ts%23L20C17-L20C29","https://github.com/zcaceres/markdownify-mcp/commit/0284aa8f34d32c65e20d8cda2d429b7943c9af03","https://security.snyk.io/vuln/SNYK-JS-MCPMARKDOWNIFYSERVER-10249387","https://security.snyk.io/vuln/SNYK-JS-MCPMARKDOWNIFYSERVER-10249387"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:01:57.636215869+00:00"},"epss":{"cve":"CVE-2025-5276","score":0.00418,"percentile":0.36124,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-frq9-3hp2-xvxg","url":"https://osv.dev/vulnerability/GHSA-frq9-3hp2-xvxg","summary":"Markdownify MCP Server allows Server-Side Request Forgery (SSRF) via the Markdownify.get() function","modified":"2025-05-29T17:59:35.137070Z","packages":[{"ecosystem":"npm","name":"mcp-markdownify-server","purl":"pkg:npm/mcp-markdownify-server","ranges":["<=0.0.1"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}