The WeChat module in YzmCMS 3.7.1 has reflected XSS via the admin/module/init.html echostr parameter, related to the valid function in application/wechat/controller/index.class.php.
Severity
CVSS 3.0
4.8 medium
CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
EPSS
0.5% chance of exploitation in the next 30 days; higher than 43% of CVEs (scores of 2026-10-31)