What is CVE-2026-11914?

CVE-2026-11914 is a medium-severity vulnerability in Drupal Composer, classified under Improper Input Validation. CVSS score: 5.9/10. Published 2026-07-10.

How severe is CVE-2026-11914?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Improper input validation in Drupal Composer

CVE-2026-11914

vulnerability in Drupal Composer allows . This issue affects Composer versions: *.*.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.003 (27.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N.

Affected products

Drupal Composer — versions *.*

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

mlhess@drupal.org

Frequently asked questions

What is CVE-2026-11914?: CVE-2026-11914 is a medium-severity vulnerability in Drupal Composer, classified under Improper Input Validation. CVSS score: 5.9/10. Published 2026-07-10.
How severe is CVE-2026-11914?: Medium severity. CVSS v3 base score is 5.9 out of 10.