CVE-2011-4681
Opera < 11.60 - Same Origin Policy Bypass via Domain Name Dot Count Manipulation
Title source: llmDescription
Opera before 11.60 does not properly consider the number of . (dot) characters that conventionally exist in domain names of different top-level domains, which allows remote attackers to bypass the Same Origin Policy by leveraging access to a different domain name in the same top-level domain, as demonstrated by the .no or .uk domain.
References (4)
Core 4
Core References
Vendor Advisory x_refsource_confirm
http://www.opera.com/support/kb/view/1003/
Vendor Advisory x_refsource_confirm
http://www.opera.com/docs/changelogs/mac/1160/
Vendor Advisory x_refsource_confirm
http://www.opera.com/docs/changelogs/windows/1160/
Vendor Advisory x_refsource_confirm
http://www.opera.com/docs/changelogs/unix/1160/
Scores
EPSS
0.0025
EPSS Percentile
47.9%
Details
CWE
CWE-264
Status
published
Products (30)
opera/opera_browser
5.0 (8 CPE variants)
opera/opera_browser
5.02
opera/opera_browser
5.10
opera/opera_browser
5.11
opera/opera_browser
5.12
opera/opera_browser
6.0 (6 CPE variants)
opera/opera_browser
6.1 (2 CPE variants)
opera/opera_browser
6.01
opera/opera_browser
6.02
opera/opera_browser
6.03
... and 20 more
Published
Dec 07, 2011
Tracked Since
Feb 18, 2026