Package Manager CWEs

This article provides a comprehensive analysis of over two hundred CVEs and security advisories filed against package managers (both clients and registries), identifying recurring failure patterns that appear independently across different tools and ecosystems over many years. The author categorizes common vulnerabilities on the client-side, including archive path traversal, argument injection into VCS commands, integrity checks that fail open, credential leakage, dependency confusion, unsafe deserialization of manifests, and resource exhaustion. For registries, the identified patterns include authorization flaws that allow publishing or replacing others' packages, account takeover via recovery paths, stored XSS, server-side code execution, SSRF, and insecure direct object references. The piece concludes that most of these issues stem from the same fundamental mistakes being repeated, and suggests that package manager maintainers can improve security by studying the advisory feeds of other projects. 

https://nesbitt.io/2026/05/04/package-manager-cwes.html

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