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CVE-2026-84361

Composer: Perforce source URL permits P4PORT `rsh:` command execution PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
composer / composeraffected >= 1.0, < 2.2.30; affected >= 2.3.0, < 2.10.3

CWE

CWE-78

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.