What is CVE-2023-5740?

CVE-2023-5740 is a medium-severity vulnerability in Ninjateam Live Chat With Facebook Messenger, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2023-10-25.

How severe is CVE-2023-5740?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Is CVE-2023-5740 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Ninjateam Live Chat With Facebook Messenger

CVE-2023-5740

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (41.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Ninjateam Live Chat With Facebook Messenger — versions 0
Ninjateam Live_chat_with_facebook_messenger

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

security@wordfence.com (Third Party Advisory)
security@wordfence.com (Issue Tracking)
security@wordfence.com (Issue Tracking)

Frequently asked questions

What is CVE-2023-5740?: CVE-2023-5740 is a medium-severity vulnerability in Ninjateam Live Chat With Facebook Messenger, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2023-10-25.
How severe is CVE-2023-5740?: Medium severity. CVSS v3 base score is 6.4 out of 10.
Is CVE-2023-5740 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.