CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2023-43655
High (8.8). EPSS 1.5% chance of exploitation in the next 30 days.
Composer is a dependency manager for PHP. Users publishing a composer.phar to a public web-accessible server where the composer.phar can be executed as a php file may be subject to a remote code execution vulnerability if PHP also has `register_argc_argv` enabled in php.ini. Versions 2.6.4, 2.2.22 and 1.10.27 patch this vulnerability. Users are advised to upgrade. Users unable to upgrade should make sure `register_argc_argv` is disabled in php.ini, and avoid publishing composer.phar to the web as this is not best practice.
Severity
- EPSS
- 1.5% chance of exploitation in the next 30 days; higher than 74% of CVEs (scores of 2026-10-31)
- CWE
- CWE-74
- Published
- Modified
- Record from
- the NVD, synced
Affected
- debian:debian_linux
- fedoraproject:fedora
- getcomposer:composer
References
- https://github.com/composer/composer/commit/4fce14795aba98e40b6c4f5047305aba17a6120d
- https://github.com/composer/composer/commit/955a48e6319c8962e5cd421b07c00ab3c728968c
- https://github.com/composer/composer/commit/95e091c921037b7b6564942845e7b738f6b95c9c
- https://github.com/composer/composer/security/advisories/GHSA-jm6m-4632-36hf
- https://lists.debian.org/debian-lts-announce/2024/03/msg00030.html