CVE-2026-59948
High · 7.0CVSS
7.0
EPSS
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Published
Jul 8, 2026
CISA due date
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The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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