CVE-2021-3831

MEDIUM NUCLEI

gnuboard5 - XSS

Title source: llm

Description

gnuboard5 is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploits (1)

nomisec WORKING POC
by aratane · poc
https://github.com/aratane/CVE-2021-3831

Nuclei Templates (1)

Gnuboard 5 - Cross-Site Scripting
MEDIUMVERIFIEDby arafatansari
Shodan: http.html:"gnuboard5"

References (2)

Scores

CVSS v3 6.1
EPSS 0.2661
EPSS Percentile 96.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
gnuboard/gnuboard5 < 5.4.20
Published Dec 14, 2021
Tracked Since Feb 18, 2026