{"id":"BIT-composer-2023-43655","summary":"Remote Code Execution via web-accessible composer.phar","details":"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.","aliases":["CVE-2023-43655","GHSA-jm6m-4632-36hf"],"modified":"2026-09-08T08:46:00.657641737Z","published":"2024-03-06T10:51:05.800Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:getcomposer:composer:*:*:*:*:*:*:*:*"]},"references":[{"type":"FIX","url":"https://github.com/composer/composer/commit/4fce14795aba98e40b6c4f5047305aba17a6120d"},{"type":"FIX","url":"https://github.com/composer/composer/commit/955a48e6319c8962e5cd421b07c00ab3c728968c"},{"type":"FIX","url":"https://github.com/composer/composer/commit/95e091c921037b7b6564942845e7b738f6b95c9c"},{"type":"ADVISORY","url":"https://github.com/composer/composer/security/advisories/GHSA-jm6m-4632-36hf"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/66H2WKFUO255T3BZTL72TNYJYH2XM5FG/"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7AWYAUZNH565NWPIKGEIYBWHYNM5JGAE/"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KFOPGPW2KS37O3KJWBRGTUWHTXCQXBS2/"},{"type":"DISCUSSION","url":"https://lists.debian.org/debian-lts-announce/2024/03/msg00030.html"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-43655"}],"affected":[{"package":{"name":"composer","ecosystem":"Bitnami","purl":"pkg:bitnami/composer"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.10.27"},{"introduced":"2.0.0"},{"fixed":"2.2.21"},{"introduced":"2.3.0"},{"fixed":"2.6.4"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/composer/BIT-composer-2023-43655.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}],"schema_version":"1.9.0"}