What’s Vulnerable › Vulnerabilities

CVE-2021-25101: Anti-Malware Security and Brute-Force Firewall < 4.20.94 - Admin+ Reflected Cross-Site Scripting

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-02-21 · updated 2026-06-17
• Weakness: CWE-79

Description

The Anti-Malware Security and Brute-Force Firewall WordPress plugin before 4.20.94 does not sanitise and escape the POST data before outputting it back in attributes of an admin page, leading to a Reflected Cross-Site scripting. Due to the presence of specific parameter value, available to admin users, this can only be exploited by an admin against another admin user.

Affected products

• Anti-Malware Security and Brute-Force Firewall: before 4.20.94 — fixed in 4.20.94

How to fix

Upgrade to a fixed version: Anti-Malware Security and Brute-Force Firewall 4.20.94. Check the vendor advisory for mitigations.

References

• https://wpscan.com/vulnerability/5fd0380c-0d1d-4380-96f0-a07be5a61eba
• https://wpscan.com/vulnerability/5fd0380c-0d1d-4380-96f0-a07be5a61eba

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