{"id":"CVE-2013-4660","url":"https://www.cyber-defence.io/tools/cve/CVE-2013-4660","generatedAt":"2026-11-05T07:28:50.661Z","title":"The JS-YAML module before 2.0.5 for Node.js parses input without properly considering the unsafe !!js/function tag, which allows remote attackers to execute arbitrary code via a crafted string that triggers an eval operation.","description":"The JS-YAML module before 2.0.5 for Node.js parses input without properly considering the unsafe !!js/function tag, which allows remote attackers to execute arbitrary code via a crafted string that triggers an eval operation.","published":"2013-06-28T14:55:03.000Z","lastModified":"2026-06-16T23:57:41.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":6.8,"severity":"MEDIUM","vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P"},"cwe":["CWE-20"],"affected":["nodeca/js-yaml"],"epss":{"score":0.17321,"percentile":0.9712,"date":"2026-11-04","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2013-09-30","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":28655,"kind":"exploit","title":"Nodejs - 'js-yaml load()' Code Exec (Metasploit)","url":"https://www.exploit-db.com/exploits/28655","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/local/28655.rb","file":"exploits/multiple/local/28655.rb","published":"2013-09-30","added":"2013-09-30","updated":"2013-09-30","author":"Metasploit","type":"local","platform":"multiple","port":null,"verified":true,"codes":["CVE-2013-4660","OSVDB-94656"],"tags":"Metasploit Framework (MSF)","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 17.3%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://portal.nodesecurity.io/advisories/js-yaml","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://nealpoole.com/blog/2013/06/code-execution-via-yaml-in-js-yaml-nodejs-module/","tags":["Exploit","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://portal.nodesecurity.io/advisories/js-yaml","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://nealpoole.com/blog/2013/06/code-execution-via-yaml-in-js-yaml-nodejs-module/","tags":["Exploit","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2013-4660","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}