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CVE-2021-24241

MEDIUM 6.1 CVSS 3.1
Published
April 22, 2021
Last modified
June 17, 2026
NVD status
Modified
Reported by
contact@wpscan.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Description

The Advanced Custom Fields Pro WordPress plugin before 5.9.1 did not properly escape the generated update URL when outputting it in an attribute, leading to a reflected Cross-Site Scripting issue in the update settings page.

Affected WordPress components

  • Advanced Custom Fields (ACF®) Plugin · advanced-custom-fields
    Confirmed match Active
    From 5.9.1 (including) to 5.9.1 (excluding)
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown Advanced Custom Fields Pro — From 5.9.1 (including) to 5.9.1 (excluding)
  • advancedcustomfields advanced_custom_fields — Before 5.9.1

References

  • github.com https://github.com/jdordonezn/Reflected-XSS-in-WordPress-for-ACF-PRO-before-5.9.1-plugin/issues/1 Exploit, Third Party Advisory
  • wpscan.com https://wpscan.com/vulnerability/d1e9c995-37bd-4952-b88e-945e02e3c83f Exploit, Third Party Advisory
  • www.advancedcustomfields.com https://www.advancedcustomfields.com/blog/acf-5-9-1-release/ Release Notes, Vendor Advisory
  • nvd.nist.gov Official NVD record