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CVE-2021-3916— Path Traversal 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 存在路径遍历漏洞，该漏洞源于受影响产品对受限目录的路径名的不当限制。

AI Predicted 7.5 Difficulty: Easy EPSS 1.20% · P65

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-3916

Vulnerability Information
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Vulnerability Title
Path Traversal in bookstackapp/bookstack
Source: CVE Program / CVE List V5
Vulnerability Description
bookstack is vulnerable to Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
BookStack 路径遍历漏洞
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 存在路径遍历漏洞，该漏洞源于受影响产品对受限目录的路径名的不当限制。
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 ~ 21.10.3 -

II. Public POCs for CVE-2021-3916

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III. Intelligence Information for CVE-2021-3916

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Patches & Fixes for CVE-2021-3916 (1)

Vendor Advisories for CVE-2021-3916 (1)

IV. Related Vulnerabilities

Same product: bookstackapp/bookstack
Same vendor: bookstackapp
Same weakness: CWE-22

V. Comments for CVE-2021-3916

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