CVE-2023-0526 Post Shortcode <= 2.0.9 - Contributor+ Stored Cross-Site Scripting
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-2023-0526?
CVE-2023-0526 is a medium-severity cross-site scripting vulnerability in Unknown Post 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 Post Shortcode WordPress plugin through 2.0.9 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-2023-0526?
It affects 1 product.
Products include Post Shortcode Project Post Shortcode.
How do I fix CVE-2023-0526?
No fix has been published for CVE-2023-0526 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-2023-0526 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-0526 exists.
Sources
Also known as GHSA-mwf5-cmw3-qpxg.