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bdu:2026-14209

BIT-composer-2026-84361 — Composer: Perforce source URL permits P4PORT `rsh:` command execution

Affected: Bitnami: composer

Composer is a dependency Manager for the PHP language. From 1.0 until 2.2.30 and 2.10.3, a malicious dependency package from a custom Composer repository or an untrusted composer.lock file could set source.type to perforce and source.url to an rsh: or jsh: P4PORT value. When the Perforce p4 client was installed and Composer installed the package from source through composer install or composer update, including --prefer-source, Composer\Util\Perforce passed the address to p4 without validation, causing p4 to run a local command with the privileges of the user or CI account. Packagist.org does not permit Perforce source metadata. This issue is fixed in versions 2.2.30 and 2.10.3.

EUVD-2026-363349

fkie_cve-2026-84361

GHSA-rvx4-ffvw-m9q3 — Composer arbitrary command execution via a malicious package's Perforce source URL

Affected: Packagist: composer/composer

## Summary

If the `p4` Perforce CLI client is installed, a malicious dependency package from a package repository allowing arbitrary perforce source URLs (packagist.org is safe) could execute arbitrary commands when running `composer install` or `composer update`. Composer passed a package's Perforce source address to the `p4` CLI client without validating it. The `p4` CLI client accepts addresses that mean "run this local command" instead of "connect to this server". This is remote code execution with the privileges of the user or CI account running Composer.

## Am I affected?

You are only affected if all of the following are true:

- The Perforce `p4` command line client is installed and on the `PATH` of the machine running Composer. - An attacker can control a package metadata's `source` section with a perforce type. Packagist.org does not allow perforce source metadata, so you are only exploitable if you rely on another Composer repository (any custom `composer`-type repository, or an inline `package` repository entry), or a `composer.lock` file you obtained from somewhere you do not trust. - The package gets installed from source, either because it has no dist artifact or because source installs are selected (for example `--prefer-source`).

Plainly not affected: anyone without the `p4` client installed, which is the large majority of Composer users. Perforce is an optional VCS integration. Also not affected: projects that only consume packages from Packagist.org, wh…

openSUSE-SU-2026:11689-1 — php-composer2-2.10.3-2.1 on GA media

php-composer2-2.10.3-2.1 on GA media

RHSA-2026:63151 — Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

composer: Composer: Security bypass allows execution of unauthorized binaries via symlinked paths composer: Composer: Arbitrary code execution via malicious Perforce source URL

SUSE-SU-2026:23635-1 — Security update for php-composer2

Security update for php-composer2

UBUNTU-CVE-2026-84361

Affected: Ubuntu:Pro:16.04:LTS: composer, Ubuntu:Pro:18.04:LTS: composer, Ubuntu:Pro:20.04:LTS: composer, Ubuntu:Pro:22.04:LTS: composer, Ubuntu:Pro:24.04:LTS: composer, Ubuntu:26.04:LTS: composer

WID-SEC-W-2026-3072 — Composer: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Composer ausnutzen, um Sicherheitsvorkehrungen zu umgehenn und beliebigen Code auszuführen.