CVE-2021-4451

HighCVSS 7.2/10Last modified Jun 17, 2026

Description

The NinjaFirewall plugin for WordPress is vulnerable to Authenticated PHAR Deserialization in versions up to, and including, 4.3.3. This allows authenticated attackers to perform phar deserialization on the server. This deserialization can allow other plugin or theme exploits if vulnerable software is present (WordPress, and NinjaFirewall).

Metrics

CVSS 3.1 7.2/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Oct 16, 2024
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2021-4451: High severity, CVSS 7.2 | Vulnix