CVE-2009-1309

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-04-22 · updated 2026-06-16
Weakness: CWE-16

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.

Affected products

Mozilla Firefox: through 3.0.8; 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 (+92)
Mozilla Seamonkey: all versions
Mozilla Thunderbird: all versions

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

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