CVE-2026-73476

mediumpriority · track · 0EPSS 0.003 · 21 %ileDEUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.30% (21st) EPSS

CVSS 5.4 · medium

Is it mine?

5 products

Check your exposure

Who says so?

3 sources

cert_bund · nvd · osv

EPSS · scored 2026-10-23

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

Technical severity, 0–10. One row per scoring source.

5.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondaryexploitability 2.8 · impact 2.5

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-178US

affected products (5)

Products and version ranges known to be affected.

Open Source Drupal External Authentication <2.0.13all versionscert_bundDE
Open Source Drupal≤ External Authentication <2.0.13cert_bundDE
external authentication project external authentication< 2.0.13nvdUScpe:2.3:a:external_authentication_project:external_authentication:*:*:*:*:*:*:*:*
external authentication project external authentication8.x-1.0 → 8.x-1.4nvdUScpe:2.3:a:external_authentication_project:external_authentication:*:*:*:*:*:*:*:*
Packagist:https://packages.drupal.org/8 drupal/externalauth< 2.0.13osvUSpkg:composer/drupal/externalauth?repository_url=https:%2F%2Fpackages.drupal.org%2F8

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2826Drupal Module: Mehrere SchwachstellenDeutsch2026-08-12csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Drupal ausnutzen, um Informationen offenzulegen, Daten zu manipulieren und Sicherheitsmaßnahmen zu umgehen.
DRUPAL-CONTRIB-2026-0982026-08-12vendor · osvUS
This module enables you to authenticate Drupal users against external identity providers. The module does not sufficiently ensure exact matching of externally supplied identity values when storing and looking up authentication mappings under certain database collation configurations. This vulnerability is minimally mitigated by the fact that it affects only sites using impacted MySQL or MariaDB collation settings for the module’s authentication mapping storage. Affected collations are quite common so all sites are encouraged to upgrade.

sources

Which sources assert this record, and when.

cert_bund nvd osv NVD CVE.org MITRE

published 2026-09-02modified 2026-09-02

references (1) nvd

External citations — patches, advisories, analysis.

https://www.drupal.org/sa-contrib-2026-098

scry

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