{"id":"CVE-2016-9910","aliases":["GHSA-8f6m-gfq9-g33v","PYSEC-2017-15"],"url":"https://o3.security/vulnerability/CVE-2016-9910","summary":"Cross-site Scripting in html5lib","details":"The serializer in html5lib before 0.99999999 might allow remote attackers to conduct cross-site scripting (XSS) attacks by leveraging mishandling of special characters in attribute values, a different vulnerability than CVE-2016-9909.","published":"2017-02-22T16:59:00.443Z","modified":"2026-10-20T10:49:04.201111102Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"html5lib","fixedVersion":"0.99999999"}],"fix":{"url":"https://github.com/html5lib/html5lib-python/commit/9b8d8eb5afbc066b7fac9390f5ec75e5e8a7cab7","label":"html5lib/html5lib-python@9b8d8eb"},"references":[{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/95132"},{"type":"ADVISORY","url":"https://github.com/html5lib/html5lib-python/issues/11"},{"type":"ADVISORY","url":"https://github.com/html5lib/html5lib-python/issues/12"},{"type":"ADVISORY","url":"https://html5lib.readthedocs.io/en/latest/changes.html#b9"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2016/12/06/5"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2016/12/08/8"},{"type":"FIX","url":"https://github.com/html5lib/html5lib-python/commit/9b8d8eb5afbc066b7fac9390f5ec75e5e8a7cab7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2016-9910"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-8f6m-gfq9-g33v"},{"type":"PACKAGE","url":"https://github.com/html5lib/html5lib-python"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/html5lib/PYSEC-2017-15.yaml"},{"type":"WEB","url":"https://web.archive.org/web/20200514233128/http://www.securityfocus.com/bid/95132"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-20T10:49:04.201111102Z"}}