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CVE-2026-73476

External Authentication - Moderately critical - Access bypass - SA-CONTRIB-2026-098

MEDIUM
5.4
CVSS Score
Published: September 2, 2026 at 12:32 PM UTC
Updated: September 15, 2026 at 12:40 PM UTC
1 product affected across 1 vendorExternal Authentication

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

External Authentication· External Authentication Projectdrupal
95%
v < 2.0.130.0.0 ≤ v < 2.0.138.x-1.0 ≤ v ≤ 8.x-1.40.0.0
Affected range stops below 2.0.13, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: cverecord
https://www.drupal.org/sa-contrib-2026-098

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-178

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