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 during install or update by using an invalid package name that is not correctly validated before dependency-resolution results are written or installed. This issue is fixed in versions 2.2.29 and 2.10.2.
Metrics
Affected Vendors & Products
References
History
Fri, 10 Jul 2026 09:30:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Getcomposer
Getcomposer composer |
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| Vendors & Products |
Getcomposer
Getcomposer composer |
Thu, 09 Jul 2026 16:30:00 +0000
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| Metrics |
ssvc
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Wed, 08 Jul 2026 19:45:00 +0000
| Type | Values Removed | Values Added |
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| Description | 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 during install or update by using an invalid package name that is not correctly validated before dependency-resolution results are written or installed. This issue is fixed in versions 2.2.29 and 2.10.2. | |
| Title | Composer: Arbitrary file write outside vendor via malicious transitive package name | |
| Weaknesses | CWE-22 CWE-787 |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-07-08T19:33:48.414Z
Updated: 2026-07-09T14:32:07.719Z
Reserved: 2026-07-07T18:49:15.607Z
Link: CVE-2026-59948
Updated: 2026-07-09T14:32:04.008Z
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