CVE-2016-2221 Open redirect in n/a

What is CVE-2016-2221?

CVE-2016-2221 is a high-severity vulnerability in Wordpress Wordpress, published on 22 May 2016. 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

Open redirect vulnerability in the wp_validate_redirect function in wp-includes/pluggable.php in WordPress before 4.4.2 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a malformed URL that triggers incorrect hostname parsing, as demonstrated by an https:example.com URL.

Which versions are affected by CVE-2016-2221?

It affects 1 product.

Products include Wordpress Wordpress.

How do I fix CVE-2016-2221?

Upgrade to a fixed version.

Is CVE-2016-2221 being exploited?

There is no known exploitation of CVE-2016-2221 in the wild and no public exploit code.

Other vulnerabilities in Wordpress Wordpress

• CVE-2026-63030 WordPress Core Interpretation Conflict Exploited Critical 9.8
• CVE-2026-87902 WordPress Core Remote File Inclusion Exploited High 8.1
• CVE-2026-60137 WordPress Core SQL Injection Exploited Medium 5.9
• CVE-2012-2399 Cross-site scripting in n/a Critical 10.0
• CVE-2012-2400 Other in n/a Critical 10.0

All Wordpress Wordpress vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2016-2221, GHSA-fwqj-qf3c-gm6c.