CVE-2017-5490 Cross-site scripting in n/a

What is CVE-2017-5490?

CVE-2017-5490 is a medium-severity cross-site scripting vulnerability in Wordpress Wordpress, published on 15 Jan 2017. 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 theme-name fallback functionality in wp-includes/class-wp-theme.php in WordPress before 4.7.1 allows remote attackers to inject arbitrary web script or HTML via a crafted directory name of a theme, related to wp-admin/includes/class-theme-installer-skin.php.

Weakness: CWE-79

Which versions are affected by CVE-2017-5490?

It affects 1 product.

Products include Wordpress Wordpress.

How do I fix CVE-2017-5490?

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-2017-5490 being exploited?

There is no known exploitation of CVE-2017-5490 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-2017-5490, GHSA-p45m-x7rq-w3r2, UBUNTU-CVE-2017-5490.