CVE-2013-4891 Cross-site scripting in n/a

Medium 6.1 Published Updated

Remote attackers can bypass XSS protection in CodeIgniter to execute scripts via unclosed HTML tags, affecting web applications using the framework.

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-2013-4891?

CVE-2013-4891 is a medium-severity cross-site scripting vulnerability in n/a, published on 21 Feb 2018. 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

The xss_clean function in CodeIgniter before 2.1.4 might allow remote attackers to bypass an intended protection mechanism and conduct cross-site scripting (XSS) attacks via an unclosed HTML tag.

Weakness: CWE-79

Which versions are affected by CVE-2013-4891?

It affects 1 product.

Products include Codeigniter Codeigniter.

How do I fix CVE-2013-4891?

No fix has been published for CVE-2013-4891 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2013-4891 being exploited?

There is no known exploitation of CVE-2013-4891 in the wild and no public exploit code.

Sources

Also known as GHSA-mq3g-6f5h-64x7.

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