CVE-2020-11051 Explained : Impact and Mitigation

Wiki.js before version 2.3.81 is affected by a stored XSS vulnerability in the Markdown editor, allowing malicious code injection. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2020-11051

In Wiki.js before 2.3.81, a stored XSS vulnerability exists in the Markdown editor, potentially leading to code injection.

What is CVE-2020-11051?

Stored XSS vulnerability in Wiki.js before version 2.3.81
Allows an attacker to inject malicious code into the content
Impact limited to editors loading the malicious page in the Markdown editor

The Impact of CVE-2020-11051

CVSS Base Score: 6.9 (Medium)
Attack Complexity: Low
Attack Vector: Network
Privileges Required: High
User Interaction: Required
Confidentiality Impact: High
Integrity Impact: Low
Scope: Changed
No availability impact

Technical Details of CVE-2020-11051

Wiki.js vulnerability details and affected systems.

Vulnerability Description

Editors with write access can inject XSS payload into content
XSS payload executed in the preview panel by another editor
XSS payload is sanitized in the rendered result

Affected Systems and Versions

Product: Wiki.js
Vendor: Requarks
Versions Affected: < 2.3.81

Exploitation Mechanism

Editors with write access load a malicious page in the Markdown editor
XSS payload executed in the preview panel

Mitigation and Prevention

Protect your systems from the Wiki.js XSS vulnerability.

Immediate Steps to Take

Update Wiki.js to version 2.3.81 to patch the vulnerability
Educate editors on safe content practices

Long-Term Security Practices

Regularly update software to latest versions
Implement content security policies

Patching and Updates

Apply security patches promptly