Critical (9.8) in xxyopen novel-plus. EPSS 0.7% chance of exploitation in the next 30 days.
An arbitrary File upload vulnerability exists in Novel-Plus v4.3.0-RC1 and prior versions at com.java2nb.system.controller.SysUserController: uploadImg(). An attacker can pass in specially crafted filename parameter to perform arbitrary File download.
Severity
CVSS 3.1
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-31)