Critical Open VSX Flaw: A Comedy of Errors in Code Security?
A critical vulnerability in the Open VSX Registry could have allowed attackers full control over the Visual Studio Code extensions marketplace, posing a severe supply chain risk. It’s a coding nightmare where extensions could become potential backdoors, leaving millions of developer machines vulnerable to malicious updates.

Hot Take:
Who knew that the real vulnerability in the world of coding was a sneaky little registry named Open VSX? It’s like finding out your seemingly harmless pet goldfish is plotting world domination. While developers were innocently updating their VS Code extensions, the Open VSX Registry had a secret vulnerability waiting to turn their computers into a hacker’s playground. Lesson for today: always keep an eye on those “trusted” code repositories, or they might just bite you when you least expect it.
Key Points:
- Critical vulnerability in Open VSX Registry could have compromised Visual Studio Code extensions marketplace.
- Exploiting a CI issue could allow attackers to publish malicious updates to extensions.
- Open VSX is widely used, making it a significant supply chain risk.
- The vulnerability involved the misuse of privileged credentials and access tokens.
- MITRE has acknowledged the risk with a new technique in its ATT&CK framework.