{"id":"CVE-2016-9263","aliases":["DEBIAN-CVE-2016-9263","DLA-1151-1","EUVD-2016-10074","GHSA-94pj-jgcq-pjjg"],"status":"published","title":"WordPress through 4.8.2, when domain-based flashmediaelement.swf sandboxing is not used, allows...","description":"WordPress through 4.8.2, when domain-based flashmediaelement.swf sandboxing is not used, allows remote attackers to conduct cross-domain Flash injection (XSF) attacks by leveraging code contained within the wp-includes/js/mediaelement/flashmediaelement.swf file.","severity":{"version":"3.0","score":4.7,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02175,"percentile":0.82435,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2017-10-12T16:00:00Z","modified":"2026-10-24T10:30:18Z","fixes":[{"ecosystem":"Debian:12","package":"wordpress","fixed_in":["4.1+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"wordpress","fixed_in":["4.1+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"wordpress","fixed_in":["4.1+dfsg-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:7","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.1+dfsg-1~deb7u17"}]}],"versions":["3.5.1+dfsg-2","3.5.2+dfsg-1","3.5.2+dfsg-1~deb6u1","3.5.2+dfsg-1~deb7u1","3.6+dfsg-1","3.6.1+dfsg-1~deb6u1","3.6.1+dfsg-1~deb6u2","3.6.1+dfsg-1~deb6u3","3.6.1+dfsg-1~deb6u4","3.6.1+dfsg-1~deb6u5","3.6.1+dfsg-1~deb6u6","3.6.1+dfsg-1~deb6u7","3.6.1+dfsg-1~deb6u8","3.6.1+dfsg-1~deb6u9","3.6.1+dfsg-1~deb7u1","3.6.1+dfsg-1~deb7u10","3.6.1+dfsg-1~deb7u11","3.6.1+dfsg-1~deb7u12","3.6.1+dfsg-1~deb7u13","3.6.1+dfsg-1~deb7u14","3.6.1+dfsg-1~deb7u15","3.6.1+dfsg-1~deb7u16","3.6.1+dfsg-1~deb7u2","3.6.1+dfsg-1~deb7u3","3.6.1+dfsg-1~deb7u4","3.6.1+dfsg-1~deb7u5","3.6.1+dfsg-1~deb7u6","3.6.1+dfsg-1~deb7u8","3.6.1+dfsg-1~deb7u9"],"bundled":8}],"products":[{"vendor":"wordpress","product":"wordpress"}],"references":[{"url":"http://www.securityfocus.com/bid/101294","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://opnsec.com/2017/10/cve-2016-9263-unpatched-xsf-vulnerability-in-wordpress/","tags":["x_refsource_MISC","x_transferred","Mitigation","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-9263"},{"url":"https://opnsec.com/2017/10/cve-2016-9263-unpatched-xsf-vulnerability-in-wordpress"},{"url":"https://github.com/advisories/GHSA-94pj-jgcq-pjjg"},{"url":"https://security-tracker.debian.org/tracker/CVE-2016-9263","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2016-9263","description":"WordPress through 4.8.2, when domain-based flashmediaelement.swf sandboxing is not used, allows remote attackers to conduct cross-domain Flash injection (XSF) attacks by leveraging code contained within the wp-includes/js/mediaelement/flashmediaelement.swf 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