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CVE-2026-3531

OpenID Connect / OAuth client - Moderately critical - Access bypass - SA-CONTRIB-2026-026

MEDIUM
6.5
CVSS Score
Published: March 26, 2026 at 08:03 PM UTC
Updated: June 17, 2026 at 10:43 AM UTC
2 products affected across 2 vendorsOpenid Connect / Oauth ClientOpenID Connect / OAuth client

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal OpenID Connect / OAuth client allows Authentication Bypass.This issue affects OpenID Connect / OAuth client: from 0.0.0 before 1.5.0.

Affected

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

Openid Connect / Oauth Client· Bojanz
95%
v < 8.x-1.5
OpenID Connect / OAuth client· Drupaldrupal
60%
0.0.0 ≤ v < 1.5.00.0.0
Affected range stops below 1.5.0, 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-2026-026

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

6.5MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-288

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