PT-2021-22368 · Bookstack · Bookstack

Haxatron · Published 2021-10-27 · Updated 2021-11-03 · CVE-2021-3906

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions bookstack (affected versions not specified)

Description The issue concerns an unrestricted upload of files with dangerous types. There is no information provided about the estimated number of potentially affected devices worldwide or real-world incidents where this issue was exploited.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

CVE-2021-3906

Affected Products

Bookstack

References · 7

• 🔥 https://huntr.dev/bounties/f115bdf5-c06b-4627-a6fa-ba6904a43ba3 · Exploit
• https://github.com/bookstackapp/bookstack/commit/64937ab826b56d086af9ecea532510d37520ebc8 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-3906 · Security Note
• https://osv.dev/vulnerability/CVE-2021-3906 · Vendor Advisory
• https://t.me/cvenotify/22525 · Telegram Post
• https://t.me/cibsecurity/31338 · Telegram Post
• https://t.me/cvenotify/22927 · Telegram Post