Composer: Arbitrary file write outside vendor via malicious transitive package name

Summary A maliciously crafted package, published on an untrusted third party repository other than Packagist.org or Private Packagist, can cause Composer to write files outside the vendor/ directory and outside your project, with attacker-controlled content, during a normal install or update...

GHSA-499R-G7PC-VMP9 Composer: Arbitrary file write outside vendor via malicious transitive package name

Summary A maliciously crafted package, published on an untrusted third party repository other than Packagist.org or Private Packagist, can cause Composer to write files outside the vendor/ directory and outside your project, with attacker-controlled content, during a normal install or update...

BIT-COMPOSER-2026-59948 Composer: Arbitrary file write outside vendor via malicious transitive package name

Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, a maliciously crafted package from an untrusted repository other than Packagist.org or Private Packagist can cause Composer to write attacker-controlled files outside the vendor directory and outside the project...

CVE-2026-59948 Composer: Arbitrary file write outside vendor via malicious transitive package name

Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, a maliciously crafted package from an untrusted repository other than Packagist.org or Private Packagist can cause Composer to write attacker-controlled files outside the vendor directory and outside the project...

CVE-2026-59948 Composer: Arbitrary file write outside vendor via malicious transitive package name

Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, a maliciously crafted package from an untrusted repository other than Packagist.org or Private Packagist can cause Composer to write attacker-controlled files outside the vendor directory and outside the project...

CVE-2026-59948 Composer: Arbitrary file write outside vendor via malicious transitive package name

Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, a maliciously crafted package from an untrusted repository other than Packagist.org or Private Packagist can cause Composer to write attacker-controlled files outside the vendor directory and outside the project...

CVE-2026-59948

CVE-2026-59948 affects Composer (PHP dependency manager). A malicious package from an untrusted repo (not Packagist.org/Private Packagist) with an invalid name could cause install/update to write attacker-controlled files outside the vendor directory and project. Root cause: failure to validate t...