CVE-2023-0873 Kanban Boards for WordPress < 2.5.21 - Admin+ Stored XSS
High-privilege users can inject malicious scripts via unsanitized settings in the Kanban Boards plugin, affecting multisite setups.
- 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-2023-0873?
CVE-2023-0873 is a medium-severity cross-site scripting vulnerability in Unknown Kanban Boards for WordPress, 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 Kanban Boards for WordPress plugin before 2.5.21 does not sanitise 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-2023-0873?
It affects 1 product.
Products include Kanbanwp Kanban Boards for Wordpress.
How do I fix CVE-2023-0873?
No fix has been published for CVE-2023-0873 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-2023-0873 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-0873 exists.
Other vulnerabilities in Unknown Kanban Boards for WordPress
Sources
Also known as GHSA-8j78-9w7g-w7xq.