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Alta

Composer's missing argument delimiter can lead to code execution via VCS repository URLs or source download URLs on systems with Mercurial

  • Publicada: 29.04.2021
  • Actualizado: 11.10.2026 10:22

URLs for Mercurial repositories in the root composer.json and package source download URLs are not sanitized correctly. Specifically crafted URL values allow commands to be executed in the HgDriver if hg/Mercurial is installed on the system.

Impact

  • The impact to Composer users directly is limited as the composer.json file is typically under their own control and source download URLs can only be supplied by third party Composer repositories they explicitly trust to download and execute source code from, e.g. Composer plugins.
  • The main impact is to services passing user input to Composer, including Packagist.org and Private Packagist. This allowed users to trigger remote command injection. The vulnerability has been patched on Packagist.org and Private Packagist within 12h of receiving the initial vulnerability report and based on a review of logs, to the best of our knowledge, was not abused by anyone.
  • Other services/tools using VcsRepository/VcsDriver or derivatives may also be vulnerable and should upgrade their composer/composer dependency immediately

Patches

1.10.22 and 2.0.13 include patches for this issue.

Software afectado

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PlataformaPaqueteVersiones vulnerablesCorregida en
Paquete de Composer composer/composer < 1.10.22, >= 2.0.0-alpha1, < 2.0.13 1.10.22, 2.0.13

Referencias

Puntuación CVSS 8.8/10
Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Debilidad (CWE)
CWE-88, CWE-94
Plataforma
Composer
Paquete
composer/composer
Publicada
29.04.2021
Actualizado
11.10.2026 10:22

Fuentes y licencias

OSV / GitHub Advisory Database - GHSA-h5h8-pc6h-jvvx - CC BY 4.0

Historial de vulnerabilidades: composer/composer

Todas las vulnerabilidades publicadas de este paquete (Paquete de Composer), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.

Todas (17) en el archivo
Entradas en total
17
Primera → última
04.2021 10.2026
Sin corrección
0
Explotada en ataques
0

Distribución por gravedad

  • Alta 13
  • Media 3
  • Baja 1

Divulgaciones por año

Gravedad:
  1. Composer arbitrary command execution via a malicious package's Perforce source URL
    Alta 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
    Alta · 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
    Alta · 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
    Alta · 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
    Alta · 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
    Alta · 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
    Alta · 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
    Alta · 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
    Alta · 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
    Alta · 8.8 CVE-2015-8371 < 1.0.0 1.0.0
  11. Missing input validation can lead to command execution in composer
    Alta · 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
    Alta · 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 esta entrada
    Alta · 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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