CVE-2020-28037

CRITICAL 9.8 CVSS 3.1

Published: November 2, 2020
Last modified: June 17, 2026
NVD status: Modified
Reported by: cve@mitre.org
Weakness: CWE-754
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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).

Affected WordPress components

WordPress core

Confirmed match

Before 5.5.2

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

n/a n/a — Versions not specified
wordpress wordpress — Before 5.5.2

References

github.com https://github.com/WordPress/wordpress-develop/commit/2ca15d1e5ce70493c5c0c096ca0c76503d6da07c Patch, Third Party Advisory
lists.debian.org https://lists.debian.org/debian-lts-announce/2020/11/msg00004.html Mailing List, Third Party Advisory
lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHHVNK2WYAM3ZTCXTFSEIT56IKLVJHU3/
lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VAVVYJKA2I6CRQUINECDPBGWMQDEG244/
lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUXVUAKL2HL4QYJEPHBNVQQWRMFMII2Y/
wordpress.org https://wordpress.org/news/2020/10/wordpress-5-5-2-security-and-maintenance-release/ Release Notes, Vendor Advisory
wpscan.com https://wpscan.com/vulnerability/10450 Third Party Advisory
www.debian.org https://www.debian.org/security/2020/dsa-4784 Third Party Advisory
nvd.nist.gov Official NVD record

WordPress CVEs

Description

Affected WordPress components

Affected products and versions

References