{"cve":"CVE-2013-4660","nvd":{"published":"2013-06-28T14:55:02.803","modified":"2026-06-16T23:57:40.687","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://portal.nodesecurity.io/advisories/js-yaml","https://nealpoole.com/blog/2013/06/code-execution-via-yaml-in-js-yaml-nodejs-module/","http://portal.nodesecurity.io/advisories/js-yaml","https://nealpoole.com/blog/2013/06/code-execution-via-yaml-in-js-yaml-nodejs-module/"],"products":["nodeca:js-yaml"],"source":"nvd","synced_at":"2026-10-19T20:29:16.037019470+00:00"},"epss":{"cve":"CVE-2013-4660","score":0.17321,"percentile":0.9711,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-xxvw-45rp-3mj2","url":"https://osv.dev/vulnerability/GHSA-xxvw-45rp-3mj2","summary":"Deserialization Code Execution in js-yaml","modified":"2023-11-08T03:57:24.142876Z","packages":[{"ecosystem":"npm","name":"js-yaml","purl":"pkg:npm/js-yaml","ranges":["<2.0.5"],"fixed":["2.0.5"]}]}],"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."]}