PT-2026-23115 · Drupal+2 · Openid Connect / Oauth Client+1

Drew Webber + 4 · Published 2026-03-04 · Updated 2026-03-26 · CVE-2026-3532

Positive Technologies (AI Summary)

CVSS v3.1

4.2

Medium

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Drupal OpenID Connect / OAuth client versions prior to 1.5.0

Description A flaw exists in the OpenID Connect / OAuth client module that allows for privilege escalation due to improper handling of case sensitivity. The module does not adequately validate the uniqueness of user fields, potentially allowing a user to register with an email address already associated with another account. This can lead to data integrity issues when a user signs in for the first time.

Recommendations Update to version 1.5.0 or later.

Fix

LPE

Weakness Enumeration

CWE-178

Related Identifiers

CVE-2026-3532

DRUPAL-CONTRIB-2026-027

Affected Products

Openid Connect / Oauth Client

Drupal/Openid Connect

References · 4

• https://drupal.org/sa-contrib-2026-027 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-3532 · Security Note
• https://osv.dev/vulnerability/DRUPAL-CONTRIB-2026-027 · Vendor Advisory
• https://twitter.com/CVEnew/status/2037280551955235244 · Twitter Post