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CVE-2021-20829

Quick assessment

Affected
WESEEK, Inc. GROWI
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.

Weseek Growi是日本Weseek公司的一个可以用Markdown编写的开源wiki系统。 GROWI v4.2.19 及更早版本中存在安全漏洞，该漏洞源于标签清理不足，允许远程攻击者在访问特制页面的用户的 Web 浏览器上执行任意脚本。

AI Predicted 6.1 Difficulty: Easy EPSS 0.75% · P55

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-20829

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Cross-site scripting vulnerability due to the inadequate tag sanitization in GROWI versions v4.2.19 and earlier allows remote attackers to execute an arbitrary script on the web browser of the user who accesses a specially crafted page.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
GROWI 及更早跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Weseek Growi是日本Weseek公司的一个可以用Markdown编写的开源wiki系统。 GROWI v4.2.19 及更早版本中存在安全漏洞，该漏洞源于标签清理不足，允许远程攻击者在访问特制页面的用户的 Web 浏览器上执行任意脚本。
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
WESEEK, Inc. GROWI versions v4.2.19 and earlier -

II. Public POCs for CVE-2021-20829

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III. Intelligence Information for CVE-2021-20829

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Vendor Advisories for CVE-2021-20829 (1)

Other References for CVE-2021-20829 (1)

IV. Related Vulnerabilities

Same product: GROWI
Same vendor: WESEEK, Inc.

V. Comments for CVE-2021-20829

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