What’s Vulnerable › Vulnerabilities
CVE-2026-82884: All in One SEO < 5.0.0.1 - Contributor+ Stored XSS via ai-assistant Block
- Severity: medium (CVSS 6.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-02 · updated 2026-09-03
- Weakness: CWE-79
Description
The All in One SEO WordPress plugin before 5.0.0.1 does not sanitise and escape some content stored in posts before rendering it back in the post editor, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks that trigger when a higher privileged user edits the post.
Affected products
- smub All in One SEO – Powerful SEO Plugin to Boost SEO Rankings & Increase Traffic: before 5.0.0.1 — fixed in 5.0.0.1
How to fix
Upgrade to a fixed version: smub All in One SEO – Powerful SEO Plugin to Boost SEO Rankings & Increase Traffic 5.0.0.1. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-82884 or the next vulnerability affects your stack