CVE-2026-82884: Unknown All In One Seo

Medium severity, CVSS 6.8. EPSS: 0.4% chance of exploitation in the next 30 days.

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

• Unknown All In One Seo: before 5.0.0.1 (fixed in 5.0.0.1)

Published 2026-09-02. Last modified 2026-09-03.