{"id":"CVE-2019-16772","aliases":["EUVD-2019-0772","GHSA-3fjq-93xj-3f3f"],"status":"published","title":"regular expressions Cross-Site Scripting (XSS) vulnerability in serialize-to-js","description":"The serialize-to-js NPM package before version 3.0.1 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.","severity":{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00646,"percentile":0.5131,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2019-12-06T23:20:26Z","modified":"2026-10-20T10:50:47Z","fixes":[{"ecosystem":"npm","package":"serialize-to-js","fixed_in":["3.0.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"serialize-to-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.1"}]}]},{"source":"osv","ecosystem":"npm","package":"serialize-to-js","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.0.1"}]}]}],"products":[{"vendor":"commenthol","product":"serialize-to-js"},{"vendor":"serialize-to-js_project","product":"serialize-to-js"}],"references":[{"url":"https://github.com/commenthol/serialize-to-js/security/advisories/GHSA-3fjq-93xj-3f3f","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/commenthol/serialize-to-js/commit/181d7d583ae5293cd47cc99b14ad13352875f3e3","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-16772","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-3fjq-93xj-3f3f","tags":["advisory"]},{"url":"https://www.npmjs.com/advisories/1429","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2019-16772","title":"regular expressions Cross-Site Scripting (XSS) vulnerability in serialize-to-js","description":"The serialize-to-js NPM package before version 3.0.1 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.","status":"published","published":"2019-12-06T23:25:14Z","modified":"2024-08-05T01:24:48.633Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:32:23.189113Z"}],"euvd":[{"id":"EUVD-2019-0772","description":"The serialize-to-js NPM package before version 3.0.1 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.","status":"published","published":"2019-12-06T23:25:14Z","modified":"2024-08-05T01:24:48Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"updated_at":"2026-11-03T02:40:31.903592Z"}],"ghsa":[{"id":"GHSA-3fjq-93xj-3f3f","title":"Cross-Site Scripting in serialize-to-js","description":"Versions of `serialize-to-js` prior to 3.0.1 are vulnerable to Cross-Site Scripting (XSS). The package fails to sanitize serialized regular expressions. This vulnerability does not affect Node.js applications.\n\n\n## Recommendation\n\nUpgrade to version 3.0.1 or later.","status":"published","published":"2019-12-06T23:20:26Z","modified":"2023-11-06T13:43:20Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:37:15.055009Z"}],"nvd":[{"id":"CVE-2019-16772","description":"The serialize-to-js NPM package before version 3.0.1 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.","status":"published","published":"2019-12-07T00:15:11.09Z","modified":"2026-06-17T02:22:46.28Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:05:38.993437Z"}],"osv":[{"id":"CVE-2019-16772","description":"The serialize-to-js NPM package before version 3.0.1 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.","status":"published","published":"2019-12-07T00:15:11.09Z","modified":"2026-10-20T10:50:47.442694904Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:11.673963Z"},{"id":"GHSA-3fjq-93xj-3f3f","title":"Cross-Site Scripting in serialize-to-js","description":"Versions of `serialize-to-js` prior to 3.0.1 are vulnerable to Cross-Site Scripting (XSS). The package fails to sanitize serialized regular expressions. This vulnerability does not affect Node.js applications.\n\n\n## Recommendation\n\nUpgrade to version 3.0.1 or later.","status":"published","published":"2019-12-06T23:20:26Z","modified":"2026-07-08T06:00:32.942609251Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:35.747385Z"}]}}