What’s Vulnerable › Vulnerabilities

CVE-2026-87944: SAML SSO - Service Provider - Critical - Improper certificate validation - SA-CONTRIB-2026-142

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-22 · updated 2026-10-22
• Weakness: CWE-295

Description

Improper Certificate Validation vulnerability in Drupal SAML SSO - Service Provider allows Adversary in the Middle (AiTM). This issue affects SAML SSO - Service Provider versions: from 0.0.0 to 3.2.0.

Affected products

• Drupal SAML SSO - Service Provider: before 3.2.0 — fixed in 3.2.0

How to fix

Upgrade to a fixed version: Drupal SAML SSO - Service Provider 3.2.0. Check the vendor advisory for mitigations.

References

• https://www.drupal.org/sa-contrib-2026-142

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