{"id":"CVE-2020-26310","aliases":["EUVD-2020-18859","GHSA-fw2v-v7vp-pccq"],"status":"published","title":"GHSL-2020-305: Regular Expression Denial of Service (ReDoS) in Pure JavaScript HTML5 Parser","description":"Validate.js provides a declarative way of validating javascript objects. All versions as of 30 November 2020 contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, it is unknown if any patches are available.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/U:Green","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00406,"percentile":0.35328,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1333"],"published":"2024-10-26T20:26:31Z","modified":"2026-06-17T03:08:03Z","products":[{"vendor":"blowsie","product":"pure-javascript-html5-parser"},{"vendor":"blowsie","product":"pure_javascript_html5_parser"}],"references":[{"url":"https://securitylab.github.com/advisories/GHSL-2020-305-redos-Pure-JavaScript-HTML5-Parser/"},{"url":"https://github.com/blowsie/Pure-JavaScript-HTML5-Parser/issues/14"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26310"},{"url":"https://securitylab.github.com/advisories/GHSL-2020-305-redos-Pure-JavaScript-HTML5-Parser"},{"url":"https://github.com/advisories/GHSA-fw2v-v7vp-pccq"}],"sources":{"cve":[{"id":"CVE-2020-26310","title":"GHSL-2020-305: Regular Expression Denial of Service (ReDoS) in Pure JavaScript HTML5 Parser","description":"Validate.js provides a declarative way of validating javascript objects. All versions as of 30 November 2020 contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, it is unknown if any patches are available.","status":"published","published":"2024-10-26T20:26:31.905Z","modified":"2024-10-28T14:15:10.274Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/U:Green","level":"high","assessor":"cna"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:35:46.129376Z"}],"euvd":[{"id":"EUVD-2020-18859","description":"Validate.js provides a declarative way of validating javascript objects. All versions as of 30 November 2020 contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, it is unknown if any patches are available.","status":"published","published":"2024-10-26T20:26:31Z","modified":"2024-10-28T14:15:10Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/U:Green","level":"high"}],"updated_at":"2026-11-03T00:05:16.619611Z"}],"ghsa":[{"id":"GHSA-fw2v-v7vp-pccq","title":"Validate.js provides a declarative way of validating javascript objects. All versions as of 30...","description":"Validate.js provides a declarative way of validating javascript objects. All versions as of 30 November 2020 contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, it is unknown if any patches are available.","status":"published","published":"2024-10-26T21:30:46Z","modified":"2024-10-26T21:30:52Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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:Green","level":"high"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:58:37.010857Z"}],"nvd":[{"id":"CVE-2020-26310","description":"Validate.js provides a declarative way of validating javascript objects. All versions as of 30 November 2020 contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, it is unknown if any patches are available.","status":"published","published":"2024-10-26T21:15:14.297Z","modified":"2026-06-17T03:08:03.18Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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:Green","level":"high","assessor":"secondary"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:06:48.591569Z"}]}}