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CVE-2021-22849— Hyweb HyCMS-J1 - Stored XSS

Quick assessment

Affected
Hyweb HyCMS-J1
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Hyweb HyCMS-J1是中国Hyweb公司的一款文本管理系统。 Hyweb HyCMS-J1 存在跨站脚本漏洞，该漏洞源于后端编辑功能不过滤特殊字符。攻击者可利用该漏洞注入JavaScript语法来执行存储XSS。

CVSS 4.6 · Medium EPSS 0.51% · P41

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript
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I. Basic Information for CVE-2021-22849

Vulnerability Information
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Vulnerability Title
Hyweb HyCMS-J1 - Stored XSS
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Hyweb HyCMS-J 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hyweb HyCMS-J1是中国Hyweb公司的一款文本管理系统。 Hyweb HyCMS-J1 存在跨站脚本漏洞，该漏洞源于后端编辑功能不过滤特殊字符。攻击者可利用该漏洞注入JavaScript语法来执行存储XSS。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Hyweb HyCMS-J1 unspecified ~ 7.4.3 -

II. Public POCs for CVE-2021-22849

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III. Intelligence Information for CVE-2021-22849

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Other References for CVE-2021-22849 (1)

IV. Related Vulnerabilities

Same product: HyCMS-J1
Same vendor: Hyweb
Same weakness: CWE-79

V. Comments for CVE-2021-22849

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