CVE-2020-26210 : What You Need to Know
Learn about CVE-2020-26210, a Cross-Site Scripting vulnerability in BookStack before version 0.30.4. Understand the impact, affected systems, exploitation mechanism, and mitigation steps.
In BookStack before version 0.30.4, a user with permissions to edit a page could add an attached link executing untrusted JavaScript, posing a security risk. The issue is fixed in version 0.30.4.
Understanding CVE-2020-26210
This CVE involves a Cross-Site Scripting vulnerability in BookStack, impacting versions prior to 0.30.4.
What is CVE-2020-26210?
- A user with edit permissions could insert a link executing untrusted JavaScript, potentially compromising security.
The Impact of CVE-2020-26210
- CVSS Score: 7.7 (High)
- Severity: High
- Attack Vector: Network
- Privileges Required: Low
- User Interaction: Required
- Scope: Changed
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: None
Technical Details of CVE-2020-26210
This section provides detailed technical insights into the vulnerability.
Vulnerability Description
- Users could embed links executing untrusted JavaScript, leading to potential security breaches.
Affected Systems and Versions
- Affected Product: BookStack
- Vendor: BookStackApp
- Vulnerable Versions: < 0.30.4
Exploitation Mechanism
- Attack Complexity: High
- User Interaction: Required
- Attack Vector: Network
Mitigation and Prevention
Protect your systems from CVE-2020-26210 with the following measures.
Immediate Steps to Take
- Upgrade to version 0.30.4 to fix the vulnerability.
- Limit page edit permissions to trusted users.
Long-Term Security Practices
- Regularly update software to the latest versions.
- Educate users on safe browsing practices.
Patching and Updates
- Ensure timely installation of patches and updates to prevent security risks.