SB2021120109 - Information disclosure in BookStack
Published: December 1, 2021
Security Bulletin ID
SB2021120109
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper access control (CVE-ID: CVE-2021-4026)
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in the API attachments read controller. A remote authenticated attacker can bypass implemented security restrictions and obtain confidential attachment data.
Remediation
Install update from vendor's website.