CVE-2021-4451
NinjaFirewall <= 4.3.3 - Authenticated PHAR Deserialization
CVSS Score
6.6
EPSS Score
0.0%
EPSS Percentile
0th
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).
| CWE | CWE-502 |
| Vendor | nintechnet |
| Product | ninjafirewall (wp edition) – advanced security plugin and firewall |
| Published | Oct 16, 2024 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
nintechnet / NinjaFirewall (WP Edition) – Advanced Security Plugin and Firewall
0 < 4.3.4
References
Credits
Chloe Chamberland