CVE-2023-1166 USM Premium < 16.3 - Admin+ Stored XSS
High-privilege users can inject malicious scripts via unsanitized settings in the USM Premium WordPress plugin, leading to stored XSS.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-1166?
CVE-2023-1166 is a medium-severity cross-site scripting vulnerability in Unknown Ultimate-Premium-Plugin, published on 27 Jun 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The USM-Premium WordPress plugin before 16.3 does not sanitize and escape some of its settings, 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).
Which versions are affected by CVE-2023-1166?
It affects 1 product.
Products include Ultimatelysocial Usm Premium.
How do I fix CVE-2023-1166?
No fix has been published for CVE-2023-1166 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-2023-1166 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-1166 exists.
Sources
Also known as GHSA-chj2-8247-g69q.