How severe is CVE-2025-67746?

CVE-2025-67746 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2025-67746 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-67746?

CVE-2025-67746 affects Getcomposer Composer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-67746?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-67746 have an EU (EUVD) identifier?

Yes. CVE-2025-67746 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-205815.

When was CVE-2025-67746 published?

CVE-2025-67746 was published on 2025-12-30 and last updated on 2026-06-17.

CVE-2025-67746

CVE-2025-67746 is a medium-severity vulnerability in Getcomposer Composer with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v4: 1.3
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-205815
Weakness: CWE-74
Affected product: Getcomposer Composer
Published: 2025-12-30
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-67746?: 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.
How severe is CVE-2025-67746?: CVE-2025-67746 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2025-67746 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-67746?: CVE-2025-67746 affects Getcomposer Composer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-67746?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-67746 have an EU (EUVD) identifier?: Yes. CVE-2025-67746 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-205815.
When was CVE-2025-67746 published?: CVE-2025-67746 was published on 2025-12-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:getcomposer:composer:*:*:*:*:*:*:*:*

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