CVE-2023-6526 Meta Box – WordPress Custom Fields Framework <= 5.9.2 - Authenticated (Contributor+) Stored Cross-Site Scripting
Authenticated contributors can inject arbitrary scripts via custom post meta values, leading to stored XSS execution for other users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-6526?
CVE-2023-6526 is a medium-severity cross-site scripting vulnerability in metabox Meta Box, published on 5 Feb 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Meta Box – WordPress Custom Fields Framework plugin for WordPress is vulnerable to Stored Cross-Site Scripting via custom post meta values displayed through the plugin's shortcode in all versions up to, and including, 5.9.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Weakness: CWE-79
Which versions are affected by CVE-2023-6526?
It affects 1 product.
Products include Metabox Meta Box.
How do I fix CVE-2023-6526?
No fix has been published for CVE-2023-6526 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-2023-6526 being exploited?
There is no known exploitation of CVE-2023-6526 in the wild and no public exploit code.
Other vulnerabilities in metabox Meta Box
Sources
Also known as GHSA-vj7x-j42w-v27g.