HOMEVULNERABILITIESCVE-2021-24218
HIGH

CVE-2021-24218

CWE-352Published: April 12, 2021· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

The wp_ajax_save_fbe_settings and wp_ajax_delete_fbe_settings AJAX actions of the Facebook for WordPress plugin before 3.0.4 were vulnerable to CSRF due to a lack of nonce protection. The settings in the saveFbeSettings function had no sanitization allowing for script tags to be saved.

NVD Source

Technical Analysis

CVE-2021-24218 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

facebook1 product(s)
facebook
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://wpscan.com/vulnerability/169d21fc-d191-46ff-82e8-9ac887aed8a4
ADVISORYhttps://www.wordfence.com/blog/2021/03/two-vulnerabilities-patched-in-facebook-for-wordpress-plugin/
ADVISORYhttps://wpscan.com/vulnerability/169d21fc-d191-46ff-82e8-9ac887aed8a4
ADVISORYhttps://www.wordfence.com/blog/2021/03/two-vulnerabilities-patched-in-facebook-for-wordpress-plugin/

All References (4)

→
https://wpscan.com/vulnerability/169d21fc-d191-46ff-82e8-9ac887aed8a4Exploit · Third Party Advisory
→
https://www.wordfence.com/blog/2021/03/two-vulnerabilities-patched-in-facebook-for-wordpress-plugin/Exploit · Third Party Advisory
→
https://wpscan.com/vulnerability/169d21fc-d191-46ff-82e8-9ac887aed8a4Exploit · Third Party Advisory
→
https://www.wordfence.com/blog/2021/03/two-vulnerabilities-patched-in-facebook-for-wordpress-plugin/Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2021-24218
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-352
CISA KEVNo
Affected1 vendor(s)
PublishedApr 12, 2021

Related CVEs (CWE-352)

CVE-2025-32642
10.0
CVE-2025-23922
10.0
CVE-2017-5145
10.0
CVE-2023-52200
9.8
CVE-2017-5959
9.8
CVE-2016-9866
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-24218 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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