Vulnerability Report

CVE-2011-4681

Title: Opera Opera Browser

Other

Proof Of Concept

No public PoC currently indexed for CVE-2011-4681.

CWE Category CWE-264

Published Date Dec 07, 2011

Modified Date Apr 29, 2026

Exploit Status Not Found

Score 5.0 CVSS v2.0

Exploit Probability (EPSS)

0.25%

Vulnerability Summary

CVE-2011-4681: 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.

Impacted Vendors

opera 1

Reference Links

http://www.opera.com/docs/changelogs/mac/1160/ http://www.opera.com/docs/changelogs/unix/1160/ http://www.opera.com/docs/changelogs/windows/1160/ http://www.opera.com/support/kb/view/1003/ http://www.opera.com/docs/changelogs/mac/1160/ http://www.opera.com/docs/changelogs/unix/1160/ http://www.opera.com/docs/changelogs/windows/1160/ http://www.opera.com/support/kb/view/1003/

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

5.0

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:N/C:N/I:P/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2011-4681 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

April 29, 2026 MODIFIED

Vulnerability data updated via NVD.

April 11, 2025 MODIFIED

Vulnerability data or affected products updated.

December 07, 2011 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:N/AC:L/Au:N/C:N/I:P/A:N

Affected Stack

No specific products linked.