CVE-2023-0273 Custom Content Shortcode <= 4.0.2 - Contributor+ Stored XSS
Contributors can inject malicious scripts via shortcode attributes, leading to stored XSS attacks against site visitors.
- 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-2023-0273?
CVE-2023-0273 is a medium-severity cross-site scripting vulnerability in Unknown Custom Content Shortcode, published on 20 Mar 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 Content Shortcode WordPress plugin through 4.0.2 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-2023-0273?
It affects 1 product.
Products include Custom Content Shortcode Project Custom Content Shortcode.
How do I fix CVE-2023-0273?
No fix has been published for CVE-2023-0273 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-2023-0273 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-0273 exists.
Other vulnerabilities in Unknown Custom Content Shortcode
- CVE-2023-0340 Custom Content Shortcode <= 4.0.2 - Contributor+ LFI
- CVE-2021-24826 Custom Content Shortcode < 4.0.2 - Authenticated Stored Cross-Site Scripting
- CVE-2021-24824 Custom Content Shortcode < 4.0.1 - Unauthorised Arbitrary Post Metadata Access
- CVE-2021-24825 Custom Content Shortcode < 4.0.2 - Authenticated Arbitrary File Access / LFI
Sources
Also known as GHSA-3gvp-4pqv-5jwr.