CVE-2023-5740 Live Chat with Facebook Messenger <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
Authenticated contributors can inject arbitrary scripts via shortcode, leading to code execution when users view the page.
- 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-2023-5740?
CVE-2023-5740 is a medium-severity cross-site scripting vulnerability in ninjateam Live Chat with Facebook Messenger, published on 24 Oct 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Live Chat with Facebook Messenger plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'messenger' shortcode in all versions up to, and including, 1.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions 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-2023-5740?
It affects 1 product.
Products include Ninjateam Live Chat With Facebook Messenger.
How do I fix CVE-2023-5740?
No fix has been published for CVE-2023-5740 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-2023-5740 being exploited?
There is no known exploitation of CVE-2023-5740 in the wild and no public exploit code.
Sources
Also known as GHSA-45jf-w8f5-5pm8.