CVE-2023-2967 TinyMCE Custom Styles < 1.1.4 - Admin+ Stored Cross-Site Scripting
Admin users can inject malicious scripts via unsanitized settings in the TinyMCE Custom Styles plugin, bypassing unfiltered_html restrictions.
- 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-2023-2967?
CVE-2023-2967 is a medium-severity cross-site scripting vulnerability in Unknown TinyMCE Custom Styles, published on 10 Jul 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The TinyMCE Custom Styles WordPress plugin before 1.1.4 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-2023-2967?
It affects 1 product.
Products include Tinymce Custom Styles Project Tinymce Custom Styles.
How do I fix CVE-2023-2967?
No fix has been published for CVE-2023-2967 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-2023-2967 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-2967 exists.
Other vulnerabilities in Unknown TinyMCE Custom Styles
Sources
Also known as GHSA-p492-c975-6xjf.