CVE-2021-4451: 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

medium Affects ninjafirewall (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published 2024-10-16; advisory modified 2026-06-17.

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

Package: ninjafirewall (WordPress plugin) WordPress
Affected versions: <=4.3.3
Fixed in: no fix recorded
Severity: medium CVSS 6.6
Exploitation: not on CISA KEV · EPSS 1% (50.4th percentile)
Published: 2024-10-16
Source: nvd

References

CWE-502

NVD record ninjafirewall (WordPress plugin) advisories

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