{"cve":"CVE-2008-4066","nvd":{"published":"2008-09-24T20:37:04.737","modified":"2026-06-16T22:57:06.200","status":"Modified","description":"Mozilla Firefox 2.0.0.14, and other versions before 2.0.0.17, allows remote attackers to bypass cross-site scripting (XSS) protection mechanisms and conduct XSS attacks via HTML-escaped low surrogate characters that are ignored by the HTML parser, as demonstrated by a \"jav&#56325ascript\" sequence, aka \"HTML escaped low surrogates bug.\"","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-79"],"references":["http://blogs.technet.com/bluehat/archive/2008/08/14/targeted-fuzzing.aspx","http://download.novell.com/Download?buildid=WZXONb-tqBw~","http://jvn.jp/en/jp/JVN96950482/index.html","http://jvndb.jvn.jp/ja/contents/2011/JVNDB-2011-000058.html","http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00005.html"],"products":["mozilla:firefox"],"source":"nvd","synced_at":"2026-10-19T19:52:44.811608366+00:00"},"epss":{"cve":"CVE-2008-4066","score":0.01761,"percentile":0.78015,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}