CVE-2022-4666 Markup <= 4.8.1 - Contributor+ Stored XSS via Shortcode
Contributors can inject malicious scripts via shortcode attributes in the Markup WordPress plugin, leading to stored XSS attacks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2022-4666?
CVE-2022-4666 is a medium-severity cross-site scripting vulnerability in Unknown Markup (JSON-LD) structured in schema.org, published on 21 Feb 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The Markup (JSON-LD) structured in schema.org WordPress plugin through 4.8.1 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
Which versions are affected by CVE-2022-4666?
It affects 1 product.
Products include Terakoya Markup \(Json-Ld\) Structured in Schema.org.
How do I fix CVE-2022-4666?
No fix has been published for CVE-2022-4666 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-2022-4666 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-4666 exists.
Sources
Also known as GHSA-w97g-gphp-c9mr.