CVE-2022-21663

MEDIUM

WordPress < 5.8.3 - Authenticated Object Injection via Multisite Super Admin Role

Title source: llm
STIX 2.1

Description

WordPress is a free and open-source content management system written in PHP and paired with a MariaDB database. On a multisite, users with Super Admin role can bypass explicit/additional hardening under certain conditions through object injection. This has been patched in WordPress version 5.8.3. Older affected versions are also fixed via security release, that go back till 3.7.37. We strongly recommend that you keep auto-updates enabled. There are no known workarounds for this issue.

References (7)

Core 7
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://wordpress.org/news/2022/01/wordpress-5-8-3-security-release/
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2022/dsa-5039
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2022/01/msg00019.html
Exploit, Third Party Advisory x_refsource_misc
https://blog.sonarsource.com/wordpress-object-injection-vulnerability/

Scores

CVSS v3 6.6
EPSS 0.0031
EPSS Percentile 54.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-502 CWE-74
Status published
Products (6)
debian/debian_linux 9.0
debian/debian_linux 10.0
debian/debian_linux 11.0
fedoraproject/fedora 34
fedoraproject/fedora 35
wordpress/wordpress < 5.8.3
Published Jan 06, 2022
Tracked Since Feb 18, 2026