ALAS2023-2026-2152

Package bin path can escape the package directory, bypassing the GHSA-gjfg-22fp-rrxx fix. A 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. (CVE-2026-59944)

noarch:
    composer-2.10.3-1.amzn2023.0.1.noarch

src:
    composer-2.10.3-1.amzn2023.0.1.src