CVE-2020-26280 : What You Need to Know

OpenSlides version 3.2 is vulnerable to persistent cross-site scripting (XSS) due to insufficient user input validation and escaping.

Understanding CVE-2020-26280

OpenSlides, a free Web-based presentation and assembly system, allows attackers to execute arbitrary JavaScript code, potentially manipulating votes or disrupting meetings.

What is CVE-2020-26280?

OpenSlides version 3.2 is susceptible to persistent cross-site scripting (XSS) due to inadequate user input validation and escaping mechanisms.

The Impact of CVE-2020-26280

High Severity: CVSS base score of 8.9 (High Severity)
Attack Vector: Network
Confidentiality Impact: High
Integrity Impact: High
Privileges Required: Low
User Interaction: Required

Technical Details of CVE-2020-26280

OpenSlides version 3.2 vulnerability details

Vulnerability Description

Users can input rich text in various fields, allowing the execution of arbitrary JavaScript code.

Affected Systems and Versions

Product: OpenSlides
Version: 3.2

Exploitation Mechanism

Attackers can inject malicious JavaScript code to manipulate votes, hijack sessions, or disrupt meetings.

Mitigation and Prevention

Protecting systems from CVE-2020-26280

Immediate Steps to Take

Update to version 3.3 to patch the vulnerability.
Avoid inputting untrusted data into OpenSlides.

Long-Term Security Practices

Implement strict input validation and output encoding.
Educate users on safe data input practices.

Patching and Updates

Patch available in version 3.3 (commit f3809fc8a97ee305d721662a75f788f9e9d21938).