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CVE

CVE-2022-21663

WordPress is a free and open-source content management system written in PHP and paired with a MariaDB database. On a mu

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.

MEDIUM · CVSS 6.6 EPSS 0.0031
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-502Deserialization of Untrusted Data
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
▤

Affected Products & Versions

3
wordpress< 5.8.3
debian linuxall versions
fedoraproject fedoraall versions
⚠

Public Exploits & PoCs

1
pocblog.sonarsource.com · wordpress-object-injection-vulnerabilityblog.sonarsource.com
▣

Scoring & Timeline

6.6
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD06 Jan 2022 · 11:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-jmmq-m8p8-332hThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/01/msg00019.htmlMailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CV4UNEC63UU5GEU47IIR4RMTZAHNEOJG/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DM6XPH3JN6V4NF4WBOJTOXZIVE6VKKE3/
https://wordpress.org/news/2022/01/wordpress-5-8-3-security-release/Release NotesVendor Advisory
https://www.debian.org/security/2022/dsa-5039Third Party Advisory
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