Fedora 43: Composer 2.9.3 Moderate DoS Fix FEDORA-2026-0b03072979
fedora
January 14, 2026
Version 2.9.3 - 2025-12-30 Security: Fixed ANSI sequence injection (GHSA-59pp-r3rg-353g / CVE-2025-67746) Fixed COMPOSER_NO_SECURITY_BLOCKING env var not being respected for update...
Summary
Composer helps you declare, manage and install dependencies of PHP projects,
ensuring you have the right stack everywhere.
Documentation: https://getcomposer.org/doc/
Update Information:
Version 2.9.3 - 2025-12-30 Security: Fixed ANSI sequence injection (GHSA-59pp-r3rg-353g / CVE-2025-67746) Fixed COMPOSER_NO_SECURITY_BLOCKING env var not being respected for updates done via the install command, and added --no-security-blocking flag to install as well (#12677) Fixed update --lock / update mirrors not working when locked packages contain vulnerabilities (#12645) Fixed client-certificate authentication implementation (#12667) Fixed php-ext schema not being validated in ValidatingArrayLoader (#12694) Fixed crash when --bump-after-update is used and the lock file is disabled (#12660) Fixed support for SecureTransport + LibreSSL on macOS (#12615) Fixed display of reasons for why advisories are ignored (#12668) Fixed compatibility issues when git has log.showSignature enabled (#12666) Fixed curl downloader not retrying when a timeout (err 28) failure occurs (#12662) Fixed EventDispatcher requiring a full Composer instance to function (#12629)
Change Log
* Wed Dec 31 2025 Remi Collet
References
[ 1 ] Bug #2428108 - CVE-2025-67746 composer: Composer: Terminal output manipulation leading to Denial of Service [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2428108
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-0b03072979' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
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Name: composer
Product: Fedora 43
Version: 2.9.3
Release: 1.fc43
Summary: Dependency Manager for PHP
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