Fedora 42: Composer Critical ANSI Injection Denial of Service Advisory
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)
Topics Covered
Change Log
* Wed Dec 31 2025 Remi Collet
References
[ 1 ] Bug #2428107 - CVE-2025-67746 composer: Composer: Terminal output manipulation leading to Denial of Service [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2428107
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-13b4dbe546' 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
PREVIOUS
NEXT
Severity
critical
Lowest
Low
Medium
High
Critical
Name: composer
Product: Fedora 42
Version: 2.9.3
Release: 1.fc42
Summary: Dependency Manager for PHP
Topics Covered
Get the latest News and Insights
Get the latest Linux and open source security news straight to your inbox.
Related News
Powered By
Linux Security - Your source for Top Linux News, Advisories, HOWTOs and Feature Releases
QUICK LINKS
subscribe to newsletters!
Like staying secure? So do we.
Sign up for updates, tips, and alerts!