WordPress plugin
Improve SEO 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.
- Critical1
- High0
- Medium0
- Low0
All Improve SEO vulnerabilities
| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Critical9.8 | Unauthenticated Arbitrary File Upload ≤2.0.11No patch available | CVE-2026-16618 |
- Critical9.8Unauthenticated Arbitrary File Upload
≤2.0.11No patch available
Improve SEO: common questions
Does Improve SEO have known vulnerabilities?
Yes. VulnCrest Radar lists 1 known vulnerability in Improve SEO: 1 critical. At least one is not fixed in the latest version.
How do I check which version of Improve SEO 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 Improve SEO vulnerability?
CVE-2026-16618, published Jul 24, 2026: ImproveSEO <= 2.0.11 - Unauthenticated Arbitrary File Upload. Severity: Critical (CVSS 9.8).
Is any Improve SEO vulnerability listed in CISA KEV?
No. None of the known Improve SEO vulnerabilities is currently listed in the CISA KEV catalog.