Invision Community Chaos: When CustomCSS Becomes a Hacker’s Playground!
Discover how a tiny line of custom CSS in Invision Community could turn your website into a hacker’s playground. Keep your site intact and avoid turning your community into a remote code execution vulnerability theme park!

Hot Take:
It turns out that Invision Community is taking the “custom” in CustomCSS a little too seriously, offering hackers an all-you-can-code buffet of vulnerabilities! If you ever wanted to see your forum turn into a digital Mount Vesuvius, then Invision Community <= 5.0.6 has just the explosive feature for you!
Key Points:
- Invision Community versions up to 5.0.6 are susceptible to a Remote Code Execution (RCE) vulnerability.
- The vulnerability is linked to the CustomCSS feature, which allows malicious actors to execute arbitrary code.
- Potential risk includes unauthorized access and complete control over the affected system.
- Users are advised to update to the latest version immediately to mitigate the risk.
- This vulnerability highlights the importance of regular security audits and updates.
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