External Authentication - Moderately critical - Access bypass - SA-CONTRIB-2026-098
Priority LOW 24CWE-178Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00296 22nd percentileScored 2026-11-07
Fix Fixed External Authentication (Drupal): 2.0.13
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Drupal | External Authentication | 0.0.0 to before 2.0.13 | 2.0.13 | Patch available | CNA |
- External Authentication VendorDrupal Affected 0.0.0 to before 2.0.13 Fixed in 2.0.13 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:external_authentication_project:external_authentication:*:*:*:*:*:drupal:*:* | before 2.0.13; 8.x-1.0 – 8.x-1.4 | Vulnerable | External Authentication Project |
- cpe:2.3:a:external_authentication_project:external_authentication:*:*:*:*:*:drupal:*:* Versions before 2.0.13; 8.x-1.0 – 8.x-1.4 Vulnerable ·External Authentication Project
Remediation
- Fix · CNA External Authentication (Drupal) Fixed in 2.0.13
Timeline
- 2026-10-02 Threatist record created from CVE-2026-73476
- 2026-10-03 Alias added: GHSA-85hq-q7c6-7j82
References
More Drupal vulnerabilities
- TI-2026-07979 Drupal core - Highly critical - SQL injection - SA-CORE-2026-004 KEVCVSS 3.1CRITICAL 9.8
- TI-2018-05494 Drupal core - Highly critical - Remote Code Execution - SA-CORE-2018-004 KEVCVSS 3.1CRITICAL 9.8
- TI-2018-05493 Improper input validation in Drupal before 7.58, 8.x before 8.3.9, 8.4.x before 8.4.6… KEVCVSS 3.1CRITICAL 9.8
- TI-2020-10731 Unrestricted file upload in Drupal Core KEVCVSS 3.1HIGH 8.8
- TI-2019-04505 Drupal core - Highly critical - Remote Code Execution KEVCVSS 3.1HIGH 8.1
- TI-2020-17477 Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks… KEVCVSS 3.1HIGH 7.8
Sources
- CVE-2026-73476 · CVE Program
- CVE-2026-73476 · NVD
- FIRST EPSS
- GHSA-85hq-q7c6-7j82 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences