CVE-2026-87947

SAML SSO - Service Provider - Moderately critical - Authentication bypass - SA-CONTRIB-2026-145

Published Oct 22, 2026 CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed
Description
Improper Verification of Cryptographic Signature vulnerability in Drupal SAML SSO - Service Provider allows Signature Spoof. This issue affects SAML SSO - Service Provider versions: from 0.0.0 to 3.2.0.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
References
History
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Drupal
Drupal saml Sso - Service Provider
Vendors & Products Drupal
Drupal saml Sso - Service Provider
Type Values Removed Values Added
Description Improper Verification of Cryptographic Signature vulnerability in Drupal SAML SSO - Service Provider allows Signature Spoof. This issue affects SAML SSO - Service Provider versions: from 0.0.0 to 3.2.0.
Title SAML SSO - Service Provider - Moderately critical - Authentication bypass - SA-CONTRIB-2026-145
Weaknesses CWE-347
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
drupal
Published
Updated
Oct 22, 2026, 4:38 PM
Reserved
Sep 9, 2026, 4:56 PM
Status
Awaiting Analysis
Published
Oct 22, 2026, 2:17 AM
Modified
Oct 22, 2026, 5:17 PM