{"id":"CVE-2019-16769","aliases":["GHSA-h9rv-jmmf-4pgx"],"url":"https://o3.security/vulnerability/CVE-2019-16769","summary":"Cross-Site Scripting in serialize-javascript","details":"The serialize-javascript npm package before version 2.1.1 is vulnerable to Cross-site Scripting (XSS). It does not properly mitigate against unsafe characters in serialized regular expressions. This vulnerability is not affected on Node.js environment since Node.js's implementation of RegExp.prototype.toString() backslash-escapes all forward slashes in regular expressions. If serialized data of regular expression objects are used in an environment other than Node.js, it is affected by this vulnerability.","published":"2019-12-05T19:15:15.180Z","modified":"2026-08-07T14:52:54.136790Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"serialize-javascript","fixedVersion":"2.1.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-h9rv-jmmf-4pgx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-16769"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-h9rv-jmmf-4pgx"},{"type":"WEB","url":"https://www.npmjs.com/advisories/1426"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T14:52:54.136790Z"}}