CVE-2009-1309
Mozilla Firefox before 3.0.9, Thunderbird, and SeaMonkey do not properly implement the Same Origin Policy for (1) XMLHttpRequest, involving a mismatch for a document's principal, and (2) XPCNativeWrapper.toString, involving an incorrect __proto__ scope,…
Does this matter?
Lower severity and a low EPSS score (1.35%). Track it; it rarely justifies an emergency change on its own.
Description
Mozilla Firefox before 3.0.9, Thunderbird, and SeaMonkey do not properly implement the Same Origin Policy for (1) XMLHttpRequest, involving a mismatch for a document's principal, and (2) XPCNativeWrapper.toString, involving an incorrect __proto__ scope, which allows remote attackers to conduct cross-site scripting (XSS) attacks and possibly other attacks via a crafted document.
- CVSS 2.0
- 4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N
- EPSS
- 1.35% probability · 71th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-16
- Affected
- mozilla/firefox · mozilla/seamonkey · mozilla/thunderbird
- Source
- secalert@redhat.com
EPSS 1.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html
- http://rhn.redhat.com/errata/RHSA-2009-0437.html
- http://secunia.com/advisories/34758
- http://secunia.com/advisories/34780
- http://secunia.com/advisories/34843
- http://secunia.com/advisories/34844
- http://secunia.com/advisories/34894
- http://secunia.com/advisories/35042
- http://secunia.com/advisories/35065
- http://secunia.com/advisories/35536
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-264308-1
- http://www.debian.org/security/2009/dsa-1797
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:111
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:141
- http://www.mozilla.org/security/announce/2009/mfsa2009-19.htmlVendor Advisory
- http://www.redhat.com/support/errata/RHSA-2009-0436.html
- http://www.redhat.com/support/errata/RHSA-2009-1125.html
- http://www.redhat.com/support/errata/RHSA-2009-1126.html
- http://www.securityfocus.com/bid/34656
- http://www.securitytracker.com/id?1022094
- http://www.ubuntu.com/usn/usn-782-1
- http://www.vupen.com/english/advisories/2009/1125
- https://bugzilla.mozilla.org/show_bug.cgi?id=478433
- https://bugzilla.mozilla.org/show_bug.cgi?id=482206
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5265
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5591
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6139
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6831
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9494
- https://usn.ubuntu.com/764-1/
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.