{"id":"CVE-2025-5276","aliases":["EUVD-2025-16365","GHSA-frq9-3hp2-xvxg"],"status":"published","title":"Markdownify MCP Server allows Server-Side Request Forgery (SSRF) via the Markdownify.get() function","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.","severity":{"version":"4.0","score":8.2,"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00418,"percentile":0.36372,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-918"],"published":"2025-05-29T05:00:05Z","modified":"2026-10-28T02:31:07Z","affected":[{"source":"ghsa","ecosystem":"npm","package":"mcp-markdownify-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.0.1"}]}]},{"source":"osv","ecosystem":"npm","package":"mcp-markdownify-server","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.0.1"}]}]}],"references":[{"url":"https://security.snyk.io/vuln/SNYK-JS-MCPMARKDOWNIFYSERVER-10249387","tags":["exploit","web"]},{"url":"https://github.com/zcaceres/markdownify-mcp/commit/0284aa8f34d32c65e20d8cda2d429b7943c9af03","tags":["fix","web"]},{"url":"https://github.com/zcaceres/markdownify-mcp/blob/224cf89f0d58616d2a5522f60f184e8391d1c9e3/src/server.ts%23L20C17-L20C29","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-5276","tags":["advisory"]},{"url":"https://github.com/zcaceres/markdownify-mcp/blob/224cf89f0d58616d2a5522f60f184e8391d1c9e3/src/server.ts#L20C17-L20C29","tags":["web"]},{"url":"https://github.com/advisories/GHSA-frq9-3hp2-xvxg"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/5xxx/CVE-2025-5276.json","tags":["advisory"]},{"url":"https://github.com/zcaceres/markdownify-mcp","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-5276","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.","status":"published","published":"2025-05-29T05:00:05.001Z","modified":"2026-08-05T15:25:32.955Z","cvss":[{"version":"4.0","score":8.2,"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","level":"high","assessor":"cna"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:P","level":"high","assessor":"cna"}],"cwes":["CWE-918","CWE-918"],"updated_at":"2026-11-02T14:32:29.97618Z"}],"euvd":[{"id":"EUVD-2025-16365","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.","status":"published","published":"2025-05-29T05:00:05Z","modified":"2026-08-05T15:25:32Z","cvss":[{"version":"4.0","score":8.2,"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","level":"high"}],"updated_at":"2026-11-02T18:02:09.87889Z"}],"ghsa":[{"id":"GHSA-frq9-3hp2-xvxg","title":"Markdownify MCP Server allows Server-Side Request Forgery (SSRF) via the Markdownify.get() function","description":"All versions of the package mcp-markdownify-server 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.","status":"published","published":"2025-05-29T06:31:17Z","modified":"2025-05-29T17:27:26Z","cvss":[{"version":"4.0","score":6.9,"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","level":"medium"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:38:44.991725Z"}],"nvd":[{"id":"CVE-2025-5276","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.","status":"published","published":"2025-05-29T05:15:21.72Z","modified":"2026-07-02T16:16:28.13Z","cvss":[{"version":"4.0","score":6.9,"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:11:10.143444Z"}],"osv":[{"id":"CVE-2025-5276","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.","status":"published","published":"2025-05-29T05:00:05.001Z","modified":"2026-10-28T02:31:07.17414027Z","cvss":[{"version":"4.0","score":6.9,"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","level":"medium"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:44:50.45326Z"},{"id":"GHSA-frq9-3hp2-xvxg","title":"Markdownify MCP Server allows Server-Side Request Forgery (SSRF) via the Markdownify.get() function","description":"All versions of the package mcp-markdownify-server 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.","status":"published","published":"2025-05-29T06:31:17Z","modified":"2025-05-29T17:59:35.13707Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"high"},{"version":"4.0","score":6.9,"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","level":"medium"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:46:46.760785Z"}]}}