Vulnerability · Published Oct 30, 2026 · Assigned by drupal
CVE-2026-118572OAuth Login - OAuth OIDC SSO - Critical - Authentication bypass - SA-CONTRIB-2026-284
Unrated
In plain English
A authentication bypass in OAuth Login - OAuth OIDC SSO from Drupal. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 92.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal OAuth Login - OAuth OIDC SSO allows Authentication Bypass. This issue affects OAuth Login - OAuth OIDC SSO versions: from 0.0.0 to 3.1.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist:https://packages.drupal.org/8 | drupal/oauth_login_oauth2 | 3.1.1 | DRUPAL-CONTRIB-2026-284 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Drupal | OAuth Login - OAuth OIDC SSO | 0.0.0 – before 3.1.1 |
Weakness: CWE-288