CVE-2020-28037 Business logic in n/a

What is CVE-2020-28037?

CVE-2020-28037 is a critical vulnerability in Debian Debian Linux, published on 31 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

is_blog_installed in wp-includes/functions.php in WordPress before 5.5.2 improperly determines whether WordPress is already installed, which might allow an attacker to perform a new installation, leading to remote code execution (as well as a denial of service for the old installation).

Weakness: CWE-754

Which versions are affected by CVE-2020-28037?

2 open source packages ship an affected version, including wordpress and wordpress-multisite. It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Wordpress Wordpress.

How do I fix CVE-2020-28037?

Upgrade wordpress to 5.5.2 or later.

Is CVE-2020-28037 being exploited?

There is no known exploitation of CVE-2020-28037 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 BIT-wordpress-2020-28037, BIT-wordpress-multisite-2020-28037, DEBIAN-CVE-2020-28037, GHSA-h2pj-w259-mfcv, UBUNTU-CVE-2020-28037.