CVE-2021-22849

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CVSS 3.1

5.4 medium

EPSS

<1%p42

Published

Jan 22, 2021 (Jan 22, 2021)

Modified

Jun 17, 2026

Description

Hyweb HyCMS-J1 backend editing function does not filter special characters. Users after log-in can inject JavaScript syntax to perform a stored XSS (Stored Cross-site scripting) attack.

Vendors: hyweb
Products: hycms-j1
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.5%)

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