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Vulnerability record · CVE-2020-28037 · published 2 November 2020

CVE-2020-28037: Wordpress vulnerability

Wordpress · Wordpress

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).

9.8 CVSS 3.1 Critical EPSS 8.1% · top 5.4% CWE-754 · CWE-754
9.8CVSS 3.1 base score, v2 7.5
8.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

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).

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/WordPress/wordpress-develop/commit/2ca15d1e5ce70493c5c0c096ca0c76503d6da07c PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00004.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHHVNK2WYAM3ZTCXTFSEIT5
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VAVVYJKA2I6CRQUINECDPBG
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUXVUAKL2HL4QYJEPHBNVQQ
https://wordpress.org/news/2020/10/wordpress-5-5-2-security-and-maintenance-release/ Release NotesVendor Advisory
https://wpscan.com/vulnerability/10450 Third Party Advisory
https://www.debian.org/security/2020/dsa-4784 Third Party Advisory
https://github.com/WordPress/wordpress-develop/commit/2ca15d1e5ce70493c5c0c096ca0c76503d6da07c PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00004.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHHVNK2WYAM3ZTCXTFSEIT5
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VAVVYJKA2I6CRQUINECDPBG
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUXVUAKL2HL4QYJEPHBNVQQ
https://wordpress.org/news/2020/10/wordpress-5-5-2-security-and-maintenance-release/ Release NotesVendor Advisory
https://wpscan.com/vulnerability/10450 Third Party Advisory
https://www.debian.org/security/2020/dsa-4784 Third Party Advisory

Track CVE-2020-28037 inside VULONE

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Source: NIST National Vulnerability Database (record CVE-2020-28037), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.