{"id":"CVE-2009-1840","url":"https://www.cyber-defence.io/tools/cve/CVE-2009-1840","generatedAt":"2026-10-27T19:39:06.606Z","title":"Mozilla Firefox before 3.0.11, Thunderbird, and SeaMonkey do not check content policy before loading a script file into a XUL document, which allows remote attackers to bypass intended access restrictions via a crafted HTML document, as demonstrated by…","description":"Mozilla Firefox before 3.0.11, Thunderbird, and SeaMonkey do not check content policy before loading a script file into a XUL document, which allows remote attackers to bypass intended access restrictions via a crafted HTML document, as demonstrated by a \"web bug\" in an e-mail message, or web script or an advertisement in a web page.","published":"2009-06-12T21:30:00.000Z","lastModified":"2026-06-16T23:08:10.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":9.3,"severity":"HIGH","vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C"},"cwe":["CWE-264"],"affected":["mozilla/firefox","mozilla/seamonkey","mozilla/thunderbird"],"epss":{"score":0.02224,"percentile":0.82585,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.22%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://osvdb.org/55158","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/35331","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/35415","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/35431","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/35439","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/35440","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/35468","source":"secalert@redhat.com"},{"url":"http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.372468","source":"secalert@redhat.com"},{"url":"http://sunsolve.sun.com/search/document.do?assetkey=1-66-264308-1","source":"secalert@redhat.com"},{"url":"http://www.debian.org/security/2009/dsa-1820","source":"secalert@redhat.com"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2009:141","source":"secalert@redhat.com"},{"url":"http://www.mozilla.org/security/announce/2009/mfsa2009-31.html","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/bid/35326","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"http://www.securitytracker.com/id?1022379","source":"secalert@redhat.com"},{"url":"http://www.vupen.com/english/advisories/2009/1572","tags":["Patch","Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=477979","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=503582","source":"secalert@redhat.com"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/51076","source":"secalert@redhat.com"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9448","source":"secalert@redhat.com"},{"url":"https://rhn.redhat.com/errata/RHSA-2009-1095.html","source":"secalert@redhat.com"},{"url":"https://www.redhat.com/archives/fedora-package-announce/2009-June/msg00574.html","source":"secalert@redhat.com"},{"url":"https://www.redhat.com/archives/fedora-package-announce/2009-June/msg00657.html","source":"secalert@redhat.com"},{"url":"http://osvdb.org/55158","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/35331","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/35415","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/35431","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/35439","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/35440","tags":["Vendor 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BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}