PT-2021-21787 · Bookstack · Bookstack

Ssddanbrown · Published 2021-09-06 · Updated 2021-09-09 · CVE-2021-3767

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

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

Description The issue is related to Improper Neutralization of Input During Web Page Generation, also known as Cross-site Scripting. This means that the software does not properly neutralize user input, allowing an attacker to inject malicious code into web pages.

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

Exploit

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-3767

Affected Products

Bookstack

References · 5

• 🔥 https://huntr.dev/bounties/7ec92c85-30eb-4071-8891-6183446ca980 · Exploit
• https://github.com/bookstackapp/bookstack/commit/040997fdc4414776bcac06a3cbaac3b26b5e8a64 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-3767 · Security Note
• https://osv.dev/vulnerability/CVE-2021-3767 · Vendor Advisory
• https://t.me/cibsecurity/28297 · Telegram Post