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CVE-2021-3768— Cross-site Scripting (XSS) - Stored in bookstackapp/bookstack

Quick assessment

Affected
bookstackapp bookstackapp/bookstack
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.

BookStack是BookStackApp（Bookstackapp）团队的一套开源的使用PHP和Laravel构建wiki文档的平台。 bookstack存在安全漏洞，该漏洞源于网页生成过程中容易受到跨站点脚本的影响

AI Predicted 6.1 Difficulty: Easy EPSS 0.58% · P45
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I. Basic Information for CVE-2021-3768

Vulnerability Information
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Vulnerability Title
Cross-site Scripting (XSS) - Stored in bookstackapp/bookstack
Source: CVE Program / CVE List V5
Vulnerability Description
bookstack is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Source: CVE Program / CVE List V5
CVSS Information
N/A
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
BookStack 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
BookStack是BookStackApp（Bookstackapp）团队的一套开源的使用PHP和Laravel构建wiki文档的平台。 bookstack存在安全漏洞，该漏洞源于网页生成过程中容易受到跨站点脚本的影响
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
bookstackapp bookstackapp/bookstack unspecified ~ 21.08.2 -

II. Public POCs for CVE-2021-3768

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III. Intelligence Information for CVE-2021-3768

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Patches & Fixes for CVE-2021-3768 (1)

Vendor Advisories for CVE-2021-3768 (1)

IV. Related Vulnerabilities

Same product: bookstackapp/bookstack
Same vendor: bookstackapp
Same weakness: CWE-79

V. Comments for CVE-2021-3768

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