CVE-2014-5240 Cross-site scripting in n/a

What is CVE-2014-5240?

CVE-2014-5240 is a low-severity cross-site scripting vulnerability in Debian Debian Linux, published on 18 Aug 2014. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Cross-site scripting (XSS) vulnerability in wp-includes/pluggable.php in WordPress before 3.9.2, when Multisite is enabled, allows remote authenticated administrators to inject arbitrary web script or HTML, and obtain Super Admin privileges, via a crafted avatar URL.

Weakness: CWE-79

Which versions are affected by CVE-2014-5240?

It affects 2 products.

Products include Debian Debian Linux, Wordpress Wordpress.

How do I fix CVE-2014-5240?

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-2014-5240 being exploited?

There is no known exploitation of CVE-2014-5240 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2014-5240, GHSA-324x-63mr-8cqc, UBUNTU-CVE-2014-5240.