CSRF in Facebook
CVE-2021-24218
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.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Facebook For WordPress — versions 3.0.0, 3.0.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.wordfence.com/blog/2021/03/two-vulnerabilities-patched-in-facebook-for-word… (Exploit, Third Party Advisory)
- wpscan.com/vulnerability/169d21fc-d191-46ff-82e8-9ac887aed8a4 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-24218?
- CVE-2021-24218 is a high-severity vulnerability in Facebook, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-04-12.
- How severe is CVE-2021-24218?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-24218 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.