CVE-2011-4681 Security feature bypass in n/a

Medium 5.0 Published Updated

Remote attackers can bypass the Same Origin Policy in Opera by exploiting domain name dot handling, requiring user interaction to visit a malicious site.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2011-4681?

CVE-2011-4681 is a medium-severity vulnerability in Opera Opera Browser, published on 7 Dec 2011. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-264

Which versions are affected by CVE-2011-4681?

It affects 1 product.

Products include Opera Opera Browser.

How do I fix CVE-2011-4681?

No fix has been published for CVE-2011-4681 yet. Limit exposure of the affected software until one is available.

Is CVE-2011-4681 being exploited?

There is no known exploitation of CVE-2011-4681 in the wild and no public exploit code.

All Opera Opera Browser vulnerabilities

Sources

Also known as GHSA-whvm-6666-v8cf.

Is CVE-2011-4681 in your software?

Upload an SBOM and sbomify checks it against every vulnerability here, every day.

Check your SBOMs for free