CVE-2026-82884 All in One SEO < 5.0.0.1 - Contributor+ Stored XSS via ai-assistant Block
Contributors can inject malicious scripts via the AI assistant block, leading to stored XSS when admins edit posts.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-82884?
CVE-2026-82884 is a medium-severity cross-site scripting vulnerability in Unknown All in One SEO, published on 2 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-82884?
How do I fix CVE-2026-82884?
No fix has been published for CVE-2026-82884 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-82884 being exploited?
There is no known exploitation of CVE-2026-82884 in the wild and no public exploit code.
Sources
Also known as GHSA-46w6-gf75-jc42.