CVE-2021-41095 : What You Need to Know
Discover the impact of CVE-2021-41095, a medium-severity XSS vulnerability in Discourse versions 2.7.7 and earlier. Learn about affected systems, exploitation mechanism, and mitigation steps.
Discourse is an open source discussion platform with a cross-site scripting vulnerability.
Understanding CVE-2021-41095
What is CVE-2021-41095?
Discourse versions 2.7.7 and earlier have a XSS vulnerability, allowing attacks through error messages containing user input.
The Impact of CVE-2021-41095
This medium-severity issue affects systems blocking watched words with HTML tags or altering Discourse's Content Security Policy.
Technical Details of CVE-2021-41095
Vulnerability Description
- XSS vulnerability in Discourse versions 2.7.7 and <= 2.8.0.beta6
Affected Systems and Versions
- Discourse <= 2.7.7
- Discourse >= 2.8.0.beta1, <= 2.8.0.beta6
Exploitation Mechanism
- Attack Complexity: High
- Attack Vector: Network
Mitigation and Prevention
Immediate Steps to Take
- Update Discourse to the latest version
- Avoid modifying or disabling Content Security Policy
Long-Term Security Practices
- Regularly monitor and update all software components
- Educate users on safe practices
Patching and Updates
- Patch available in the latest stable, beta, and tests-passed versions of Discourse