Medium severity · published Oct 22, 2026
CVE-2026-87940
Key auth - Moderately critical - Access bypass - SA-CONTRIB-2026-138
New
5.4
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DR
Drupal · Drupal
0.0.0 before 2.2.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-87940
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-87940
www.drupal.org
https://www.drupal.org/sa-contrib-2026-138
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