SEO Plugin by Squirrly SEO: A security weakness
SEO Plugin by Squirrly SEO is affected by a security weakness. Exploitation requires at least subscriber-level access. The resulting impact depends on how the affected component exposes the vulnerable operation.
- Component
- SEO Plugin by Squirrly SEO
- Plugin slug
squirrly-seo- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Feb 19, 2026
- Weakness
- CWE-862 — Missing Authorization
This CVE was published Feb 19, 2026 and is one of 10 known issues for this plugin.
Update, patch or deactivate.
Update SEO Plugin by Squirrly SEO to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The SEO Plugin by Squirrly SEO plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the sq_ajax_uninstall function in all versions up to, and including, 12.4.14. This makes it possible for authenticated attackers, with Subscriber-level access and above, to disconnect the site from Squirrly's cloud service.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N