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)

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.003 (26.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-11914: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

References

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.