Versions of the package mailparser before 3.9.3 are vulnerable to Cross-site Scripting (XSS) via the textToHtml() function due to the improper sanitisation of URLs in the email content.
CVSS 4.0MEDIUM 5.1·Network·No auth·User interaction·EPSS 0.00363·Published 2026-03-03·Fixed in 3.9.3CWE-79