Protect your GitHub Repository from Stored XSS Attacks in Cockpit

CVSScvssV3_0: 8.1

The open source project Cockpit, a web-based user interface for Linux systems administration, was affected by a stored cross-site scripting (XSS) vulnerability in versions prior to 2.6.4.

Cross-site scripting (XSS) attacks occur when malicious scripts are injected into otherwise trusted websites. Stored or persistent XSS involves storing the malicious script in the website’s database, for example in a comment, forum post or profile field. When another user views the page where this code is stored, the code can potentially be executed on their machine and hijack their session, redirect them to some other site, or perform other malicious actions.

In this case, the vulnerability was in Cockpit’s GitHub repository, where malicious scripts could have been stored. When other users visited the repository page, the scripts may have run on their machines with their permissions. This could have allowed an attacker to access private files in the repository or even gain administrative access to the affected systems.

To protect yourself, always keep your software and applications up-to-date, including any open source projects you use. Update to Cockpit version 2.6.4 or above to patch this vulnerability. Also be wary of entering any untrusted code or scripts on third party sites. Use strong and unique passwords for your GitHub and other online accounts.