Medium severity · published Sep 2, 2026
CVE-2026-73476
External Authentication - Moderately critical - Access bypass - SA-CONTRIB-2026-098
5.4
CVSS
0.3%
EPSS
No
On KEV
Description
Improper Handling of Case Sensitivity vulnerability in Drupal External Authentication allows Privilege Escalation. This issue affects External Authentication versions: from 0.0.0 to 2.0.13.
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)0.3% · higher than 22% 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 2.0.13 · source: vendor
EA
External Authentication · External Authentication Project
before 2.0.13; 8.x-1.0 through 8.x-1.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-73476
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-73476
Vendor Advisory
https://www.drupal.org/sa-contrib-2026-098
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