{"id":"CVE-2025-5276","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.","aliases":["GHSA-frq9-3hp2-xvxg"],"modified":"2026-08-12T03:51:40.688287342Z","published":"2025-05-29T05:00:05.001Z","database_specific":{"cna_assigner":"snyk","cwe_ids":["CWE-918"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/5xxx/CVE-2025-5276.json","unresolved_ranges":[{"extracted_events":[{"fixed":"1.0.0"}],"source":"AFFECTED_FIELD"},{"extracted_events":[{"fixed":"1.0.0"}],"source":"DESCRIPTION"}]},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/zcaceres/markdownify-mcp","events":[{"introduced":"0"},{"fixed":"0284aa8f34d32c65e20d8cda2d429b7943c9af03"}],"database_specific":{"source":"REFERENCES"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-5276.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}