WordPress plugin
404 SEO Redirection security & vulnerabilities
Unpatched vulnerability in the latest version
At least one vulnerability affects the latest version and no fix has been released. Deactivate the plugin or restrict access to the affected feature until the vendor ships a patch.
- Critical0
- High2
- Medium1
- Low0
All 404 SEO Redirection vulnerabilities
| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.5 | Unauthenticated SQL Injection ≤1.0No patch available | CVE-2016-20071 | |
| High8.8 | Cross-Site Request Forgery ≤1.3Update to 1.4 | CVE-2021-24324 |
- High7.5Unauthenticated SQL Injection
≤1.0No patch available
- High8.8Cross-Site Request Forgery
≤1.3Update to 1.4
404 SEO Redirection: common questions
Does 404 SEO Redirection have known vulnerabilities?
Yes. VulnCrest Radar lists 3 known vulnerabilities in 404 SEO Redirection: 2 high, 1 medium. At least one is not fixed in the latest version.
How do I check which version of 404 SEO Redirection I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent 404 SEO Redirection vulnerability?
CVE-2016-20071, published Jun 15, 2026: 404 SEO Redirection <= 1.0 - Unauthenticated SQL Injection. Severity: High (CVSS 7.5).
Is any 404 SEO Redirection vulnerability listed in CISA KEV?
No. None of the known 404 SEO Redirection vulnerabilities is currently listed in the CISA KEV catalog.