CVE-2023-6645 Post Grid Combo – 36+ Gutenberg Blocks <= 2.2.64 - Authenticated (Contributor+) Cross-Site Scripting
Authenticated contributors can inject arbitrary scripts via a custom JS parameter, 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-2023-6645?
CVE-2023-6645 is a medium-severity cross-site scripting vulnerability in pickplugins Post Grid, published on 11 Jan 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Post Grid Combo – 36+ Gutenberg Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the custom JS parameter in all versions up to, and including, 2.2.64 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor access or higher 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-2023-6645?
It affects 1 product.
Products include Pickplugins Post Grid Combo.
How do I fix CVE-2023-6645?
No fix has been published for CVE-2023-6645 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-2023-6645 being exploited?
There is no known exploitation of CVE-2023-6645 in the wild and no public exploit code.
Other vulnerabilities in pickplugins Post Grid
Sources
Also known as GHSA-3c6g-c26j-3686.