CVE-2023-5740

MEDIUM 5.4CVE-2023-5740 · Published 25/10/2023 · updated 17/06/2026

In short

CVE-2023-5740 is a MEDIUM (CVSS 5.4) vulnerability affecting live chat with facebook messenger (ninjateam).
Chance of exploitation in the next 30 days (EPSS): 0.62%, higher than 49.8% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
live chat with facebook messenger ninjateam	`≤ 1.0`	No fix yet

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.

References

plugins.trac.wordpress.org/browser/wp-facebook-messenger/trunk/frontend/shortcode.php · Issue Tracking
plugins.trac.wordpress.org/browser/wp-facebook-messenger/trunk/frontend/shortcode.php · Issue Tracking
wordfence.com/threat-intel/vulnerabilities/id/aa32a790-242f-4142-9f4d-e1b2a07045bb · Third Party Advisory

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Scan my site free