CVE-2020-21494

PoC —

CVSS 3.1

6.1 medium

EPSS

<1%p51

Published

Oct 4, 2021 (Oct 4, 2021)

Modified

Jun 17, 2026

Description

A cross-site scripting (XSS) vulnerability in the component install\install.sql of Xiuno BBS 4.0.4 allows attackers to execute arbitrary web scripts or HTML via changing the doctype value to 0.

Vendors: xiuno
Products: xiunobbs
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.7%)

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