CVE-2010-1206

no score yetEPSS 1.1%

The startDocumentLoad function in browser/base/content/browser.js in Mozilla Firefox 3.5.x before 3.5.11 and 3.6.x before 3.6.7, and SeaMonkey before 2.0.6, does not properly implement the Same Origin Policy in certain circumstances related to the about:blank document and a document that is currently loading, which allows (1) remote web servers to conduct spoofing attacks via vectors involving a 204 (aka No Content) status code, and allows (2) remote attackers to conduct spoofing attacks via vectors involving a window.stop call.

EPSS: 1.1% chance of exploitation in the next 30 days; higher than 65% of CVEs (scores of 2026-10-31)
CWE: CWE-264
Published: 2010-06-25
Modified: 2026-06-16
Record from: the NVD, synced 2026-10-19

Affected

mozilla:firefox
mozilla:seamonkey

References

http://hg.mozilla.org/mozilla-central/rev/cadddabb1178
http://lcamtuf.blogspot.com/2010/06/yeah-about-that-address-bar-thing.html
http://secunia.com/advisories/40283
http://www.mozilla.org/security/announce/2010/mfsa2010-45.html
https://bugzilla.mozilla.org/show_bug.cgi?id=556957

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