CVE-2026-59948
1 advisory.
Packagist/composer/composer CVE-2026-59948: high 7, EPSS 0.14%
Composer: Arbitrary file write outside vendor via malicious transitive package name
Action: Upgrade composer/composer to 2.2.29 or later.
composer require composer/composer:2.10.2composer require composer/composer:2.2.29Affected
| introduced | fixed | last affected |
|---|---|---|
| 2.3.0 | 2.10.2 | - |
| 1.0.0 | 2.2.29 | - |
Fixed versions
| 2.10.2 | 2.2.29 |
Sources
- osv: GHSA-499r-g7pc-vmp9
- https://github.com/composer/composer/security/advisories/GHSA-499r-g7pc-vmp9
- https://nvd.nist.gov/vuln/detail/CVE-2026-59948
- https://github.com/composer/composer/commit/502c6c4f699802d9cf464728b3e8a95674f919a0
- https://github.com/composer/composer/commit/c50b1efd13ebd73f6dca19b31424c5a02bf93cc1
- https://github.com/composer/composer
- https://github.com/composer/composer/releases/tag/2.10.2
- https://github.com/composer/composer/releases/tag/2.2.29
CVE-2026-59948 · published · modified · JSON