8.8

CVE-2021-24218: facebook Cross-Site Request Forgery (CSRF)

CVSS: 8.8v3.1HighModified
Published 12-04-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-24218 is a high (CVSS 8.8) Cross-Site Request Forgery (CSRF) vulnerability in facebook. EPSS estimates a 0.70% chance of exploitation in the next 30 days, higher than 52.3% of scored vulnerabilities. 2 public exploits are recorded. Fixed in 3.0.4.

Overall risk
45/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (NVD)
EPSS score
0.70%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference

Timeline

  1. 12-04-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.70%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

0.00 pp

From 0.70% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.70%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • referenceUnverified

    Exploit Reference (wordfence.com)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Facebook1 product
Unknown1 product
Wordpress1 product
  • official-facebook-pixel≥ 3.0.0, < 3.0.4

3 vendors · 3 products

References

3 links