There is a Cross Site Scripting (XSS) vulnerability in the "theme" parameter of preview.php in PHPJabbers Callback Widget v1.0.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

• PHPJabbers Callback Widget v1.0 - Cross-Site Scripting http/cves/2023/CVE-2023-40755.yaml

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.