What is CVE-2026-87940?

CVE-2026-87940 is a medium-severity vulnerability in Drupal Key Auth, classified under CWE-525. CVSS score: 5.4/10. Published 2026-10-22.

How severe is CVE-2026-87940?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Drupal Key Auth

CVE-2026-87940

Use of Web Browser Cache Containing Sensitive Information vulnerability in Drupal Key auth allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Key auth versions: from 0.0.0 to 2.2.4.

Published 2026-10-22 · last modified 2026-10-22.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Drupal Key Auth

Weakness classification (CWE)

CWE-525

References

www.drupal.org/sa-contrib-2026-138

Frequently asked questions

What is CVE-2026-87940?: CVE-2026-87940 is a medium-severity vulnerability in Drupal Key Auth, classified under CWE-525. CVSS score: 5.4/10. Published 2026-10-22.
How severe is CVE-2026-87940?: Medium severity. CVSS v3 base score is 5.4 out of 10.