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Composer

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high advisory

Composer: Arbitrary File Write via Malicious Transitive Package Name

A critical vulnerability, CVE-2026-59948, in Composer allows for arbitrary file write outside the project's vendor directory when processing a maliciously crafted package from an untrusted third-party repository during `install` or `update` operations, enabling code execution.

Composer +1 php supply-chain arbitrary-file-write code-execution vulnerability
3t 1c
high advisory

Laravel Lang Packages Hijacked in Credential-Stealing Supply Chain Attack

Attackers compromised Laravel Lang packages by rewriting GitHub tags, distributing a credential-stealing malware targeting cloud credentials, secrets, keys, browser data, and cryptocurrency wallets across Windows, Linux, and macOS systems.

laravel-lang/lang +3 supply-chain-attack credential-theft infostealer composer php github
2r 4t 1i
medium threat

GitHub Actions GITHUB_TOKEN Disclosure via Composer Validation Failure

Composer leaks GitHub OAuth tokens in GitHub Actions logs if they do not match the expected format due to a validation regex, leading to potential unauthorized access.

github.com github actions composer token-leak cve-2026-45793
2r 1t
high advisory

Composer Command Injection via Malicious Perforce Repository

Composer is vulnerable to command injection via a malicious Perforce repository due to improper escaping of user-supplied Perforce connection parameters, potentially leading to arbitrary command execution in the context of the user running Composer.

composer command-injection php
2r 1t