CVE-2023-0542 Custom Post Type List Shortcode <= 1.4.4 - Contributor+ Stored XSS
Contributors can inject malicious scripts via shortcode attributes, leading to stored XSS attacks on WordPress sites.
- 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-2023-0542?
CVE-2023-0542 is a medium-severity cross-site scripting vulnerability in Unknown Custom Post Type List Shortcode, published on 8 May 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 Custom Post Type List Shortcode WordPress plugin through 1.4.4 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.
Weakness: CWE-79
Which versions are affected by CVE-2023-0542?
It affects 1 product.
Products include Blackbirdi Custom Post Type List Shortcode.
How do I fix CVE-2023-0542?
No fix has been published for CVE-2023-0542 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-2023-0542 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-0542 exists.
Sources
Also known as GHSA-xc72-g7rw-977p.