What’s Vulnerable › Vulnerabilities
CVE-2024-35242: Composer vulnerable to command injection via malicious git/hg branch names
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 3.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-06-10 · updated 2026-06-17
- Weakness: CWE-77
Description
Composer is a dependency manager for PHP. On the 2.x branch prior to versions 2.2.24 and 2.7.7, the `composer install` command running inside a git/hg repository which has specially crafted branch names can lead to command injection. This requires cloning untrusted repositories. Patches are available in version 2.2.24 for 2.2 LTS or 2.7.7 for mainline. As a workaround, avoid cloning potentially compromised repositories.
Affected products
- Fedoraproject Fedora: 39, 40
- composer: from 2.0 before 2.2.24; from 2.3 before 2.7.7 — fixed in 2.2.24, 2.7.7
How to fix
Upgrade to a fixed version: composer 2.2.24, 2.7.7. Check the vendor advisory for mitigations.
References
- https://github.com/composer/composer/commit/6bd43dff859c597c09bd03a7e7d6443822d0a396
- https://github.com/composer/composer/commit/fc57b93603d7d90b71ca8ec77b1c8a9171fdb467
- https://github.com/composer/composer/security/advisories/GHSA-v9qv-c7wm-wgmf
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PO4MU2BC7VR6LMHEX4X7DKGHVFXZV2MC/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VLPJHM2WWSYU2F6KHW2BYFGYL4IGTKHC/
- https://github.com/composer/composer/commit/6bd43dff859c597c09bd03a7e7d6443822d0a396
- https://github.com/composer/composer/commit/fc57b93603d7d90b71ca8ec77b1c8a9171fdb467
- https://github.com/composer/composer/security/advisories/GHSA-v9qv-c7wm-wgmf
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PO4MU2BC7VR6LMHEX4X7DKGHVFXZV2MC/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VLPJHM2WWSYU2F6KHW2BYFGYL4IGTKHC/
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