{"id":"CVE-2026-59944","aliases":["ALPINE-CVE-2026-59944","BIT-composer-2026-59944","DEBIAN-CVE-2026-59944","EUVD-2026-80863","GHSA-96h3-5x6v-m776","RHSA-2026:63151","SUSE-SU-2026:23943-1","SUSE-SU-2026:4283-1","SUSE-SU-2026:4288-1","UBUNTU-CVE-2026-59944","openSUSE-SU-2026:11633-1","openSUSE-SU-2026:21970-1"],"status":"published","title":"Composer: CVE-2026-59946 fix bypass via symlinked package bin path","description":"Composer is a dependency Manager for the PHP language. From 1.0 until 2.2.30 and from 2.3.0 until 2.10.3, a malicious or compromised dependency can bypass the earlier CVE-2026-59946 binary-path hardening because Composer validates literal parent-directory segments only during dependency resolution, while the symlink and installed-metadata paths described by the advisory skip that validation. A package can ship an in-package binary symlink that resolves outside its installation directory, or attacker-influenced vendor/composer/installed.json metadata can provide an escaping binary path during a reinstall or regeneration of missing vendor/bin entries. The installed-metadata path is reachable only when the vendor directory was not populated by the same validated install run, such as when it is restored from an untrusted cache, copied from an earlier build stage, carried over from an older Composer run, or writable by a lower-trust build step. Composer can follow the path, change the external target's permissions to make it world-readable and executable, and create a runnable vendor/bin proxy to that external file. The issue does not directly read or transmit data and does not by itself provide remote code execution. This issue is fixed in versions 2.2.30 and 2.10.3.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.0047,"percentile":0.4113,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22","CWE-59","CWE-732"],"published":"2026-08-28T00:00:00Z","modified":"2026-11-03T06:33:05Z","fixes":[{"ecosystem":"Packagist","package":"composer/composer","fixed_in":["2.10.3","2.2.30"],"sources":["ghsa","osv"]},{"ecosystem":"Alpine:v3.24","package":"composer","fixed_in":["2.10.3-r0"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"composer","fixed_in":["2.2.30","2.10.3"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"composer","fixed_in":["2.10.3-1"],"sources":["osv"]},{"ecosystem":"openSUSE:Tumbleweed","package":"php-composer2","fixed_in":["2.10.3-1.1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"composer/composer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.3.0"},{"fixed":"2.10.3"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"composer/composer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0"},{"fixed":"2.2.30"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"composer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.3-r0"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"composer","ranges":[{"type":"SEMVER","events":[{"introduced":"1.0.0"},{"fixed":"2.2.30"},{"introduced":"2.3.0"},{"fixed":"2.10.3"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"composer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.0-1","2.10.0~rc1-1","2.10.0~rc1-2","2.10.0~rc1-3","2.10.0~rc2-1","2.10.1-1","2.10.1-2","2.10.2-1","2.10.3-1","2.5.5-1","2.5.5-1+deb12u1","2.5.5-1+deb12u2","2.5.5-1+deb12u3","2.5.5-1+deb12u4","2.5.5-1+deb12u5","2.5.6-1","2.5.7-1","2.5.8-1","2.6.2-1","2.6.3-1","2.6.4-1","2.6.5-1","2.6.6-1","2.7.1-1","2.7.1-2","2.7.2-1","2.7.4-1","2.7.6-1","2.7.6-2","2.7.6-3","2.7.7-1","2.7.7-2","2.7.8-1","2.7.9-1","2.8.0-1","2.8.1-1","2.8.10-1","2.8.11-1","2.8.11-2","2.8.12-1","2.8.2-1","2.8.3-1","2.8.4-1","2.8.4-2","2.8.4-3","2.8.5-1","2.8.6-1","2.8.8-1","2.8.9-1","2.9.0~rc1-1","2.9.1-1","2.9.2-1","2.9.3-1","2.9.4-1","2.9.5-1","2.9.7-1","2.9.8-1"]},{"source":"osv","ecosystem":"Debian:13","package":"composer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.0-1","2.10.0~rc1-1","2.10.0~rc1-2","2.10.0~rc1-3","2.10.0~rc2-1","2.10.1-1","2.10.1-2","2.10.2-1","2.10.3-1","2.8.10-1","2.8.11-1","2.8.11-2","2.8.12-1","2.8.8-1","2.8.8-1+deb13u1","2.8.8-1+deb13u2","2.8.8-1+deb13u3","2.8.9-1","2.9.0~rc1-1","2.9.1-1","2.9.2-1","2.9.3-1","2.9.4-1","2.9.5-1","2.9.7-1","2.9.8-1"]},{"source":"osv","ecosystem":"Debian:14","package":"composer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.3-1"}]}],"versions":["2.10.0-1","2.10.0~rc1-1","2.10.0~rc1-2","2.10.0~rc1-3","2.10.0~rc2-1","2.10.1-1","2.10.1-2","2.10.2-1","2.8.10-1","2.8.11-1","2.8.11-2","2.8.12-1","2.8.8-1","2.8.9-1","2.9.0~rc1-1","2.9.1-1","2.9.2-1","2.9.3-1","2.9.4-1","2.9.5-1","2.9.7-1","2.9.8-1"]},{"source":"osv","ecosystem":"Packagist","package":"composer/composer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.3.0"},{"fixed":"2.10.3"}]}],"versions":["2.10.0","2.10.0-RC1","2.10.0-RC2","2.10.1","2.10.2","2.3.0","2.3.1","2.3.10","2.3.2","2.3.3","2.3.4","2.3.5","2.3.6","2.3.7","2.3.8","2.3.9","2.4.0","2.4.0-RC1","2.4.1","2.4.2","2.4.3","2.4.4","2.5.0","2.5.1","2.5.2","2.5.3","2.5.4","2.5.5","2.5.6","2.5.7","2.5.8","2.6.0","2.6.1","2.6.2","2.6.3","2.6.4","2.6.5","2.6.6","2.7.0","2.7.1","2.7.2","2.7.3","2.7.4","2.7.5","2.7.6","2.7.7","2.7.8","2.7.9","2.8.0","2.8.1","2.8.10","2.8.11","2.8.12","2.8.2","2.8.3","2.8.4","2.8.5","2.8.6","2.8.7","2.8.8","2.8.9","2.9.0","2.9.0-RC1","2.9.1","2.9.2","2.9.3","2.9.4","2.9.5","2.9.6","2.9.7","2.9.8"]},{"source":"osv","ecosystem":"Packagist","package":"composer/composer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0"},{"fixed":"2.2.30"}]}],"versions":["1.0.0","1.0.0-alpha1","1.0.0-alpha10","1.0.0-alpha11","1.0.0-alpha2","1.0.0-alpha3","1.0.0-alpha4","1.0.0-alpha5","1.0.0-alpha6","1.0.0-alpha7","1.0.0-alpha8","1.0.0-alpha9","1.0.0-beta1","1.0.0-beta2","1.0.1","1.0.2","1.0.3","1.1.0","1.1.0-RC","1.1.1","1.1.2","1.1.3","1.10.0","1.10.0-RC","1.10.1","1.10.10","1.10.11","1.10.12","1.10.13","1.10.14","1.10.15","1.10.16","1.10.17","1.10.18","1.10.19","1.10.2","1.10.20","1.10.21","1.10.22","1.10.23","1.10.24","1.10.25","1.10.26","1.10.27","1.10.28","1.10.3","1.10.4","1.10.5","1.10.6","1.10.7","1.10.8","1.10.9","1.2.0","1.2.0-RC","1.2.1","1.2.2","1.2.3","1.2.4","1.3.0","1.3.0-RC","1.3.1","1.3.2","1.3.3","1.4.0","1.4.1","1.4.2","1.4.3","1.5.0","1.5.1","1.5.2","1.5.3","1.5.4","1.5.5","1.5.6","1.6.0","1.6.0-RC","1.6.1","1.6.2","1.6.3","1.6.4","1.6.5","1.7.0","1.7.0-RC","1.7.1","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CVE-2026-59946 fix bypass via symlinked package bin path","description":"Composer is a dependency Manager for the PHP language. From 1.0 until 2.2.30 and from 2.3.0 until 2.10.3, a malicious or compromised dependency can bypass the earlier CVE-2026-59946 binary-path hardening because Composer validates literal parent-directory segments only during dependency resolution, while the symlink and installed-metadata paths described by the advisory skip that validation. A package can ship an in-package binary symlink that resolves outside its installation directory, or attacker-influenced vendor/composer/installed.json metadata can provide an escaping binary path during a reinstall or regeneration of missing vendor/bin entries. The installed-metadata path is reachable only when the vendor directory was not populated by the same validated install run, such as when it is restored from an untrusted cache, copied from an earlier build stage, carried over from an older Composer run, or writable by a lower-trust build step. Composer can follow the path, change the external target's permissions to make it world-readable and executable, and create a runnable vendor/bin proxy to that external file. The issue does not directly read or transmit data and does not by itself provide remote code execution. This issue is fixed in versions 2.2.30 and 2.10.3.","status":"published","published":"2026-09-16T16:09:43.258Z","modified":"2026-09-16T17:29:39.824Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-22","CWE-59"],"updated_at":"2026-11-02T14:19:58.560602Z"}],"euvd":[{"id":"EUVD-2026-80863","description":"Composer is a dependency Manager for the PHP language. From 1.0 until 2.2.30 and from 2.3.0 until 2.10.3, a malicious or compromised dependency can bypass the earlier CVE-2026-59946 binary-path hardening because Composer validates literal parent-directory segments only during dependency resolution, while the symlink and installed-metadata paths described by the advisory skip that validation. A package can ship an in-package binary symlink that resolves outside its installation directory, or attacker-influenced vendor/composer/installed.json metadata can provide an escaping binary path during a reinstall or regeneration of missing vendor/bin entries. The installed-metadata path is reachable only when the vendor directory was not populated by the same validated install run, such as when it is restored from an untrusted cache, copied from an earlier build stage, carried over from an older Composer run, or writable by a lower-trust build step. Composer can follow the path, change the external target's permissions to make it world-readable and executable, and create a runnable vendor/bin proxy to that external file. The issue does not directly read or transmit data and does not by itself provide remote code execution. This issue is fixed in versions 2.2.30 and 2.10.3.","status":"published","published":"2026-09-16T16:09:43Z","modified":"2026-09-16T17:29:39Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T17:28:15.055852Z"}],"ghsa":[{"id":"GHSA-96h3-5x6v-m776","title":"Composer: GHSA-gjfg-22fp-rrxx fix bypass via symlinked package bin path","description":"## Summary\n\nA malicious or compromised Composer package could, when installed as a dependency, cause Composer to change the permissions of a file outside that package's own directory and to register a runnable `vendor/bin` command that points at that outside file. This is a path traversal and link following issue. It is not remote code execution, the attacker gains no ability to read or receive your data directly. The risk is that a file which was readable only by its owner, but modifiable by Composer, can be made world readable and executable, which is enough to expose its contents on a shared or multi tenant host. The earlier hardening from GHSA-gjfg-22fp-rrxx can be bypassed, since it only rejected literal `..` path segments in a package's declared binaries, and was only applied in a single place during dependency resolution.\n\n## Am I affected?\n\nYou can be affected if a malicious or compromised package, including a transitive dependency, is installed in your project, and either of the following is true:\n\n- The dependency package ships one of its declared binaries as a symbolic link that resolves to a location outside the package's own directory. Nothing beyond a normal install or update is required.\n- Or, the recorded metadata of your installed dependencies (`vendor/composer/installed.json`) declares a binary path that escapes the package's directory. Composer regenerates missing binaries from that recorded metadata at the end of an install, and uses this metadata for reinstalls of the same package. In both of these cases the validation applied during dependency resolution is skipped. This situation is only reachable when your `vendor` directory is not populated from the same install run, which performs validation. For example a vendor directory restored from a shared or untrusted CI cache, copied in from an earlier container build stage, carried over from a Composer older than 2.10.2 or 2.2.29, or writable by a lower trust build step, could contain such malicious data.\n\nThe most realistic way to get hit is a `composer install` in a build or deploy step that reuses a `vendor` directory produced elsewhere, since the permission change is applied silently and with the privileges of the user running Composer.\n\n## Patched versions\n\nComposer now verifies that each declared binary resolves to a path inside the installing package's own directory before it touches the file, and skips any binary that resolves outside it with a warning. Update to the patched releases (2.10.3 and 2.2.30).\n\n## Workarounds\n\nUpgrading is the only complete fix.","status":"published","published":"2026-10-02T19:14:34Z","modified":"2026-10-02T19:14:36Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"medium"}],"cwes":["CWE-22","CWE-59","CWE-732"],"updated_at":"2026-11-02T14:41:24.739884Z"}],"nvd":[{"id":"CVE-2026-59944","description":"Composer is a dependency Manager for the PHP language. From 1.0 until 2.2.30 and from 2.3.0 until 2.10.3, a malicious or compromised dependency can bypass the earlier CVE-2026-59946 binary-path hardening because Composer validates literal parent-directory segments only during dependency resolution, while the symlink and installed-metadata paths described by the advisory skip that validation. A package can ship an in-package binary symlink that resolves outside its installation directory, or attacker-influenced vendor/composer/installed.json metadata can provide an escaping binary path during a reinstall or regeneration of missing vendor/bin entries. The installed-metadata path is reachable only when the vendor directory was not populated by the same validated install run, such as when it is restored from an untrusted cache, copied from an earlier build stage, carried over from an older Composer run, or writable by a lower-trust build step. Composer can follow the path, change the external target's permissions to make it world-readable and executable, and create a runnable vendor/bin proxy to that external file. The issue does not directly read or transmit data and does not by itself provide remote code execution. This issue is fixed in versions 2.2.30 and 2.10.3.","status":"published","published":"2026-09-16T17:17:28.59Z","modified":"2026-09-30T17:43:24.057Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-22","CWE-59"],"updated_at":"2026-11-02T14:12:48.630594Z"}],"osv":[{"id":"ALPINE-CVE-2026-59944","description":"Composer is a dependency Manager for the PHP language. From 1.0 until 2.2.30 and from 2.3.0 until 2.10.3, a malicious or compromised dependency can bypass the earlier CVE-2026-59946 binary-path hardening because Composer validates literal parent-directory segments only during dependency resolution, while the symlink and installed-metadata paths described by the advisory skip that validation. A package can ship an in-package binary symlink that resolves outside its installation directory, or attacker-influenced vendor/composer/installed.json metadata can provide an escaping binary path during a reinstall or regeneration of missing vendor/bin entries. The installed-metadata path is reachable only when the vendor directory was not populated by the same validated install run, such as when it is restored from an untrusted cache, copied from an earlier build stage, carried over from an older Composer run, or writable by a lower-trust build step. Composer can follow the path, change the external target's permissions to make it world-readable and executable, and create a runnable vendor/bin proxy to that external file. The issue does not directly read or transmit data and does not by itself provide remote code execution. This issue is fixed in versions 2.2.30 and 2.10.3.","status":"published","published":"2026-09-16T17:17:28.59Z","modified":"2026-11-03T06:33:05.838684747Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T07:15:37.282377Z"},{"id":"CVE-2026-59944","title":"Composer: CVE-2026-59946 fix bypass via symlinked package bin path","description":"Composer is a dependency Manager for the PHP language. From 1.0 until 2.2.30 and from 2.3.0 until 2.10.3, a malicious or compromised dependency can bypass the earlier CVE-2026-59946 binary-path hardening because Composer validates literal parent-directory segments only during dependency resolution, while the symlink and installed-metadata paths described by the advisory skip that validation. A package can ship an in-package binary symlink that resolves outside its installation directory, or attacker-influenced vendor/composer/installed.json metadata can provide an escaping binary path during a reinstall or regeneration of missing vendor/bin entries. The installed-metadata path is reachable only when the vendor directory was not populated by the same validated install run, such as when it is restored from an untrusted cache, copied from an earlier build stage, carried over from an older Composer run, or writable by a lower-trust build step. Composer can follow the path, change the external target's permissions to make it world-readable and executable, and create a runnable vendor/bin proxy to that external file. The issue does not directly read or transmit data and does not by itself provide remote code execution. This issue is fixed in versions 2.2.30 and 2.10.3.","status":"published","published":"2026-09-16T16:09:43.258Z","modified":"2026-10-28T02:30:55.762755416Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"medium"}],"cwes":["CWE-22","CWE-59"],"updated_at":"2026-11-02T15:45:12.496548Z"},{"id":"DEBIAN-CVE-2026-59944","description":"Composer is a dependency Manager for the PHP language. From 1.0 until 2.2.30 and from 2.3.0 until 2.10.3, a malicious or compromised dependency can bypass the earlier CVE-2026-59946 binary-path hardening because Composer validates literal parent-directory segments only during dependency resolution, while the symlink and installed-metadata paths described by the advisory skip that validation. A package can ship an in-package binary symlink that resolves outside its installation directory, or attacker-influenced vendor/composer/installed.json metadata can provide an escaping binary path during a reinstall or regeneration of missing vendor/bin entries. The installed-metadata path is reachable only when the vendor directory was not populated by the same validated install run, such as when it is restored from an untrusted cache, copied from an earlier build stage, carried over from an older Composer run, or writable by a lower-trust build step. Composer can follow the path, change the external target's permissions to make it world-readable and executable, and create a runnable vendor/bin proxy to that external file. The issue does not directly read or transmit data and does not by itself provide remote code execution. This issue is fixed in versions 2.2.30 and 2.10.3.","status":"published","published":"2026-09-16T17:17:28.59Z","modified":"2026-10-01T08:47:28.382531204Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:57.932517Z"},{"id":"GHSA-96h3-5x6v-m776","title":"Composer: GHSA-gjfg-22fp-rrxx fix bypass via symlinked package bin path","description":"## Summary\n\nA malicious or compromised Composer package could, when installed as a dependency, cause Composer to change the permissions of a file outside that package's own directory and to register a runnable `vendor/bin` command that points at that outside file. This is a path traversal and link following issue. It is not remote code execution, the attacker gains no ability to read or receive your data directly. The risk is that a file which was readable only by its owner, but modifiable by Composer, can be made world readable and executable, which is enough to expose its contents on a shared or multi tenant host. The earlier hardening from GHSA-gjfg-22fp-rrxx can be bypassed, since it only rejected literal `..` path segments in a package's declared binaries, and was only applied in a single place during dependency resolution.\n\n## Am I affected?\n\nYou can be affected if a malicious or compromised package, including a transitive dependency, is installed in your project, and either of the following is true:\n\n- The dependency package ships one of its declared binaries as a symbolic link that resolves to a location outside the package's own directory. Nothing beyond a normal install or update is required.\n- Or, the recorded metadata of your installed dependencies (`vendor/composer/installed.json`) declares a binary path that escapes the package's directory. Composer regenerates missing binaries from that recorded metadata at the end of an install, and uses this metadata for reinstalls of the same package. In both of these cases the validation applied during dependency resolution is skipped. This situation is only reachable when your `vendor` directory is not populated from the same install run, which performs validation. For example a vendor directory restored from a shared or untrusted CI cache, copied in from an earlier container build stage, carried over from a Composer older than 2.10.2 or 2.2.29, or writable by a lower trust build step, could contain such malicious data.\n\nThe most realistic way to get hit is a `composer install` in a build or deploy step that reuses a `vendor` directory produced elsewhere, since the permission change is applied silently and with the privileges of the user running Composer.\n\n## Patched versions\n\nComposer now verifies that each declared binary resolves to a path inside the installing package's own directory before it touches the file, and skips any binary that resolves outside it with a warning. Update to the patched releases (2.10.3 and 2.2.30).\n\n## Workarounds\n\nUpgrading is the only complete fix.","status":"published","published":"2026-10-02T19:14:34Z","modified":"2026-10-02T19:30:06.43223503Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"medium"}],"cwes":["CWE-22","CWE-59","CWE-732"],"updated_at":"2026-11-02T15:46:43.123867Z"},{"id":"RHSA-2026:63151","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-09-04T10:13:57Z","modified":"2026-09-22T10:42:47.885001819Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:21.91255Z"},{"id":"UBUNTU-CVE-2026-59944","description":"Composer is a dependency Manager for the PHP language. From 1.0 until 2.2.30 and from 2.3.0 until 2.10.3, a malicious or compromised dependency can bypass the earlier CVE-2026-59946 binary-path hardening because Composer validates literal parent-directory segments only during dependency resolution, while the symlink and installed-metadata paths described by the advisory skip that validation. A package can ship an in-package binary symlink that resolves outside its installation directory, or attacker-influenced vendor/composer/installed.json metadata can provide an escaping binary path during a reinstall or regeneration of missing vendor/bin entries. The installed-metadata path is reachable only when the vendor directory was not populated by the same validated install run, such as when it is restored from an untrusted cache, copied from an earlier build stage, carried over from an older Composer run, or writable by a lower-trust build step. Composer can follow the path, change the external target's permissions to make it world-readable and executable, and create a runnable vendor/bin proxy to that external file. The issue does not directly read or transmit data and does not by itself provide remote code execution. This issue is fixed in versions 2.2.30 and 2.10.3.","status":"published","published":"2026-09-16T17:17:00Z","modified":"2026-10-17T12:56:00.357050312Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T16:56:41.911783Z"},{"id":"BIT-composer-2026-59944","title":"Composer: CVE-2026-59946 fix bypass via symlinked package bin path","description":"Composer is a dependency Manager for the PHP language. From 1.0 until 2.2.30 and from 2.3.0 until 2.10.3, a malicious or compromised dependency can bypass the earlier CVE-2026-59946 binary-path hardening because Composer validates literal parent-directory segments only during dependency resolution, while the symlink and installed-metadata paths described by the advisory skip that validation. A package can ship an in-package binary symlink that resolves outside its installation directory, or attacker-influenced vendor/composer/installed.json metadata can provide an escaping binary path during a reinstall or regeneration of missing vendor/bin entries. The installed-metadata path is reachable only when the vendor directory was not populated by the same validated install run, such as when it is restored from an untrusted cache, copied from an earlier build stage, carried over from an older Composer run, or writable by a lower-trust build step. Composer can follow the path, change the external target's permissions to make it world-readable and executable, and create a runnable vendor/bin proxy to that external file. The issue does not directly read or transmit data and does not by itself provide remote code execution. This issue is fixed in versions 2.2.30 and 2.10.3.","status":"published","published":"2026-09-25T12:20:02.481Z","modified":"2026-10-06T15:15:04.406977279Z","updated_at":"2026-11-02T15:28:28.70813Z"},{"id":"openSUSE-SU-2026:11633-1","title":"php-composer2-2.10.3-1.1 on GA media","description":"These are all security issues fixed in the php-composer2-2.10.3-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-08-28T00:00:00Z","modified":"2026-08-29T09:15:04.362084783Z","updated_at":"2026-11-02T16:58:39.516824Z"},{"id":"openSUSE-SU-2026:21970-1","title":"Security update for php-composer2","description":"This update for php-composer2 fixes the following issues:\n\n- CVE-2026-59944: path traversal and link following issue can make files world readable and executable (bsc#1279898).\n","status":"published","published":"2026-09-29T14:57:30Z","modified":"2026-10-01T18:23:09.935082881Z","updated_at":"2026-11-02T16:58:42.426393Z"},{"id":"SUSE-SU-2026:23943-1","title":"Security update for php-composer2","description":"This update for php-composer2 fixes the following issues:\n\n- CVE-2026-59944: path traversal and link following issue can make files world readable and executable (bsc#1279898).\n","status":"published","published":"2026-09-29T14:45:31Z","modified":"2026-10-02T18:23:11.013872944Z","updated_at":"2026-11-02T15:54:03.991985Z"},{"id":"SUSE-SU-2026:4283-1","title":"Security update for php-composer2","description":"This update for php-composer2 fixes the following issues:\n\n- CVE-2026-45793: GitHub OAuth tokens failing regex validation can cause credential disclosure (bsc#1271504).\n- CVE-2026-59944: path traversal and link following issue can make files world readable and executable (bsc#1279898).\n- CVE-2026-59946: package bin entries with path segments can cause unintended host file permission modifications\n  (bsc#1271152).\n- CVE-2026-59947: unsanitized URL credential handling in debug output within Composer can allow sensitive token\n  disclosure (bsc#1271130).\n- CVE-2026-59948: missing package name validation during dependency resolution in Composer can allow path traversal\n  (bsc#1271123).\n- CVE-2026-84361: arbitrary code execution via malicious Perforce source URL (bsc#1278257).\n\nChanges for php-composer2:\n\n- version update to 2.2.30:\n\n * Fixed command injection via malicious Perforce url (GHSA-rvx4-ffvw-m9q3)\n * Sanitize URL-embedded usernames/token in a few more places (#13045)\n * Fixed matching of gitlab URLs to avoid possible credential leak to the wrong domain (#13042)\n  \n- fix a regression on s390x due last change (bsc#1271729).\n\n- version update to 2.2.29:\n\n * Validate package names (GHSA-499r-g7pc-vmp9)\n * Validate package bin paths against path traversal (GHSA-gjfg-22fp-rrxx)\n * Sanitize URL-embedded usernames/token in verbose output (GHSA-g6xq-892h-64w3)\n * Only follow HTTP redirects from HTTP responses (#12948)\n * Prevent phar metadata unserialization on unsafe PHP versions (#12946)\n * Sanitize JSON parse errors in http responses to avoid leaking response body data (#12959)\n * Fixed GitHub token validation to be even more relaxed (#12856)\n  \n- version update to 2.2.28.\n","status":"published","published":"2026-09-22T08:35:35Z","modified":"2026-09-23T09:15:06.105248697Z","updated_at":"2026-11-02T15:54:05.838224Z"},{"id":"SUSE-SU-2026:4288-1","title":"Security update for php-composer2","description":"This update for php-composer2 fixes the following issues:\n\n- CVE-2026-59944: path traversal and link following issue can make files world readable and executable (bsc#1279898).\n","status":"published","published":"2026-09-22T16:09:53Z","modified":"2026-09-23T09:15:06.102842358Z","updated_at":"2026-11-02T15:54:05.838224Z"}]}}