CVE-2024-0561 Ultimate Posts Widget < 2.3.1 - Admin+ Stored XSS
Admins can inject malicious scripts via widget options in Ultimate Posts Widget, enabling stored XSS attacks in multisite environments.
- 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-2024-0561?
CVE-2024-0561 is a medium-severity cross-site scripting vulnerability in Unknown Ultimate Posts Widget, published on 11 Mar 2024. 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 Ultimate Posts Widget WordPress plugin before 2.3.1 does not validate and escape some of its Widget options before outputting them back in attributes, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)
Weakness: CWE-79
Which versions are affected by CVE-2024-0561?
It affects 1 product.
Products include Inisev Ultimate Posts Widget.
How do I fix CVE-2024-0561?
No fix has been published for CVE-2024-0561 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-2024-0561 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-0561 exists.
Sources
Also known as GHSA-hv62-rcrq-hx82.