CVE-2026-59946

A flaw was found in Composer, a dependency manager for PHP. A malicious package can exploit a vulnerability in Composer's binary installation process by using specially crafted path segments. This allows an existing file on the host system to have its permissions changed to be world-readable and...

EUVD-2026-42360

Composer: Path traversal in package bin field lets dependencies chmod arbitrary host files...

EUVD-2026-42362

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

Path Traversal

Composer is vulnerable to Path Traversal. The vulnerability is due to insufficient validation of package names from untrusted repositories, which allows an attacker to write arbitrary files outside the project and vendor directories during package installation or update...

Sensitive Information Disclosure

Composer is vulnerable to Sensitive Information Disclosure. The vulnerability is due to insufficient sanitization of username-only URL credentials in debug output, which allows an attacker to expose embedded credentials such as access tokens when Composer is run with verbose debugging enabled...

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...

BIT-COMPOSER-2026-59946 Composer: Path traversal in package bin field lets dependencies chmod arbitrary host files

Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, a Composer package bin entry containing .. path segments can resolve outside the package install directory and cause Composer's binary installation flow to chmod an existing host file to a world-readable and...

PT-2026-58901

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-2026-11914 Composer - Critical - Unsupported - SA-CONTRIB-2026-046

vulnerability in Drupal Composer allows . This issue affects Composer versions:...

Linux Distros Unpatched Vulnerability : CVE-2026-59948

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Linux Distros Unpatched Vulnerability : CVE-2026-59947

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, when Composer is run with -vvv debug verbosity, it could print a credential...

Directory Traversal

Overview composer/composer is a Dependency Manager for PHP. Composer helps you declare, manage and install dependencies of PHP projects. It ensures you have the right stack everywhere. Affected versions of this package are vulnerable to Directory Traversal through improper validation of package...

DEBIAN-CVE-2026-59948

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-2026-59946

Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, a Composer package bin entry containing .. path segments can resolve outside the package install directory and cause Composer's binary installation flow to chmod an existing host file to a world-readable and...

CVE-2026-59946

Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, a Composer package bin entry containing .. path segments can resolve outside the package install directory and cause Composer's binary installation flow to chmod an existing host file to a world-readable and...

CVE-2026-59946 Composer: Path traversal in package bin field lets dependencies chmod arbitrary host files

Composer is a dependency Manager for the PHP language. Prior to 2.2.29 and 2.10.2, a Composer package bin entry containing .. path segments can resolve outside the package install directory and cause Composer's binary installation flow to chmod an existing host file to a world-readable and...

CVE-2026-46765

Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware component: Composer. Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle WebCenter...

Amazon Linux 2023 : composer (ALAS2023-2026-1800)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1800 advisory. Github Actions issued GITHUBTOKEN disclosure in GitHub Actions logs CVE-2026-45793 Tenable has extracted the preceding description block directly from the tested product security advisory. Note that...