GHSA-59pp-r3rg-353gLow

Composer is vulnerable to ANSI sequence injection

Published
December 30, 2025
Last Modified
December 31, 2025

🔗 CVE IDs covered (1)

📋 Description

Impact

Attackers controlling remote sources that Composer downloads from might in some way inject ANSI control characters in the terminal output of various Composer commands, causing mangled output and potentially leading to confusion or DoS of the terminal application.

There is no proven exploit and this has thus a low severity but Composer still published a CVE as it has potential for abuse, and Composer wants to be on the safe side informing users that they should upgrade.

Patches

2.2.26 for 2.2 LTS or 2.9.3 for mainline.

🎯 Affected products2

  • composer/composer/composer:>= 2.0.0, < 2.2.26
  • composer/composer/composer:>= 2.3.0, < 2.9.3

🔗 References (7)