CVE-2026-82884

All in One SEO < 5.0.0.1 - Contributor+ Stored XSS via ai-assistant Block

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

All in One SEO

CVSS v3.1 WPSCAN

6.8 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

EPSS

0.24% chance of exploitation in the next 30 days, 14th percentile

Published

2026-09-02

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/9d4e5075-062a-42d7-beba-9f96f9ce76da/

References

• CVE Record
• NVD entry