Cross-Site Scripting (XSS) vulnerability in newwinform.php in GNUBOARD5 before 5.3.1.6 allows remote attackers to inject arbitrary web script or HTML via the popup title parameter.
https://github.com/gnuboard/gnuboard5/commit/b1fc952c7600b825c4b02e2789ddafdea18c8d13
https://github.com/gnuboard/gnuboard5/blob/b1fc952c7600b825c4b02e2789ddafdea18c8d13/adm/newwinformupdate.php
https://github.com/gnuboard/gnuboard5/blob/b1fc952c7600b825c4b02e2789ddafdea18c8d13/adm/newwinform.php
Source: Mitre, NVD
Published: 2019-03-27
Updated: 2026-06-17
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.0037