CVE-2025-67746

unknown

Published 2025-12-30 · Modified 2026-02-03

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

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Description

Composer is a dependency manager for PHP. In versions on the 2.x branch prior to 2.2.26 and 2.9.3, 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 we still publish a CVE as it has potential for abuse, and we want to be on the safe side informing users that they should upgrade. Versions 2.2.26 and 2.9.3 contain a patch for the issue.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Mixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`2.8.8-1+deb13u1`
sid	Fixed	`2.9.3-1`
forky	Fixed	`2.9.3-1`
bullseye	Affected	—
bookworm	Fixed	`2.5.5-1+deb12u3`

Package impact

Ecosystem	Package	Vulnerable	Fixed
Packagist	composer/composer	`>=2.0.0,<2.2.26`	`2.2.26`
Packagist	composer/composer	`>=2.3.0,<2.9.3`	`2.9.3`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.