CVE-2023-27641: Lsoft Listserv

Medium severity, CVSS 6.1. EPSS: 1.1% chance of exploitation in the next 30 days.

The REPORT (after z but before a) parameter in wa.exe in L-Soft LISTSERV 16.5 before 17 allows an attacker to conduct XSS attacks via a crafted URL.

Affected products

• Lsoft Listserv: before 17.0 (fixed in 17.0)

Published 2023-03-05. Last modified 2026-06-17.