CVE-2015-5734 Cross-site scripting in n/a

Medium 4.3 Published Updated

Remote attackers can inject arbitrary web script or HTML via a crafted string in the legacy theme preview, potentially compromising user sessions.

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
Available

What is CVE-2015-5734?

CVE-2015-5734 is a medium-severity cross-site scripting vulnerability in Wordpress Wordpress, published on 9 Nov 2015. 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

Cross-site scripting (XSS) vulnerability in the legacy theme preview implementation in wp-includes/theme.php in WordPress before 4.2.4 allows remote attackers to inject arbitrary web script or HTML via a crafted string.

Weakness: CWE-79

Which versions are affected by CVE-2015-5734?

It affects 1 product.

Products include Wordpress Wordpress.

How do I fix CVE-2015-5734?

Upgrade to a fixed version.

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-2015-5734 being exploited?

There is no known exploitation of CVE-2015-5734 in the wild and no public exploit code.

All Wordpress Wordpress vulnerabilities

Sources

Also known as DEBIAN-CVE-2015-5734, GHSA-vfq5-r47g-jgp7.

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