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High

Composer has multiple command injections via malicious git/hg branch names

  • Disclosed: 10.06.2024
  • Updated: 11.10.2026 10:22

Impact

The composer install command running inside a git/hg repository which has specially crafted branch names can lead to command injection. So this requires cloning untrusted repositories.

Patches

2.2.24 for 2.2 LTS or 2.7.7 for mainline

Workarounds

Avoid cloning potentially compromised repositories.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package composer/composer >= 2.0, < 2.2.24, >= 2.3, < 2.7.7 2.2.24, 2.7.7

References

CVSS score 8.8/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-77
Platform
Composer
Package
composer/composer
Disclosed
10.06.2024
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-v9qv-c7wm-wgmf - CC BY 4.0

Vulnerability history: composer/composer

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (17) in the archive
Total entries
17
First → latest
04.2021 10.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 13
  • Medium 3
  • Low 1

Disclosures per year

Severity:
  1. Composer arbitrary command execution via a malicious package's Perforce source URL
    High CVE-2026-84361 >= 2.3.0, < 2.10.3, >= 1.0, < 2.2.30 2.10.3, 2.2.30
  2. Composer: Arbitrary file write outside vendor via malicious transitive package name
    High · 7.0 CVE-2026-59948 >= 2.3.0, < 2.10.2, >= 1.0.0, < 2.2.29 2.10.2, 2.2.29
  3. Github Actions issued GITHUB_TOKEN disclosure in GitHub Actions logs
    High · 7.5 CVE-2026-45793 >= 2.3.0, < 2.9.8, >= 2.0.0, < 2.2.28, >= 1.0, < 1.10.28 2.9.8, 2.2.28, 1.10.28
  4. Composer has a command injection via malicious perforce repository
    High · 7.8 CVE-2026-40176 >= 2.3.0, < 2.9.6, >= 1.0.0, < 2.2.27 2.9.6, 2.2.27
  5. Composer has a command injection via malicious perforce reference
    High · 8.8 CVE-2026-40261 >= 2.3.0, < 2.9.6, >= 1.0.0, < 2.2.27 2.9.6, 2.2.27
  6. Composer has a command injection via malicious git branch name
    High · 8.8 CVE-2024-35241 >= 2.0, < 2.2.24, >= 2.3, < 2.7.7 2.2.24, 2.7.7
  7. Composer has multiple command injections via malicious git/hg branch names this entry
    High · 8.8 CVE-2024-35242 >= 2.0, < 2.2.24, >= 2.3, < 2.7.7 2.2.24, 2.7.7
  8. Composer code execution and possible privilege escalation via compromised InstalledVersions.php or installed.php
    High · 8.8 CVE-2024-24821 >= 2.0.0-alpha1, < 2.2.23, >= 2.3.0-rc1, < 2.7.0 2.2.23, 2.7.0
  9. Composer Remote Code Execution vulnerability via web-accessible composer.phar
    High · 8.8 CVE-2023-43655 < 1.10.27, >= 2.0.0, < 2.2.22, >= 2.3.0, < 2.6.4 1.10.27, 2.2.22, 2.6.4
  10. Composer allows cache poisoning from other projects built on the same host
    High · 8.8 CVE-2015-8371 < 1.0.0 1.0.0
  11. Missing input validation can lead to command execution in composer
    High · 8.3 CVE-2022-24828 < 1.10.26, >= 2.0, < 2.2.12, >= 2.3, < 2.3.5 1.10.26, 2.2.12, 2.3.5
  12. Improper escaping of command arguments on Windows leading to command injection
    High · 8.2 CVE-2021-41116 < 1.10.23, >= 2.0.0-alpha1, < 2.1.9 1.10.23, 2.1.9
  13. Composer's missing argument delimiter can lead to code execution via VCS repository URLs or source download URLs on systems with Mercurial
    High · 8.8 CVE-2021-29472 < 1.10.22, >= 2.0.0-alpha1, < 2.0.13 1.10.22, 2.0.13

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