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PatchSiren cyber security CVE debrief

CVE-2026-87953 Drupal CVE debrief

A Server-Side Request Forgery (SSRF) vulnerability exists in Drupal SAML SSO - Service Provider versions from 0.0.0 to 3.2.0. This issue allows for Server Side Request Forgery. Defenders should assess exposure, particularly those managing SAML SSO configurations. The vulnerability enables attackers to make unauthorized requests on behalf of the server, potentially leading to security control bypass, data breaches, or unauthorized access. To address this issue, defenders should review and update SAML SSO - Service Provider to version 3.2.0 or higher, assess exposure and prioritize remediation for affected deployments, and monitor for potential SSRF attacks.

Vendor
Drupal
Product
SAML SSO - Service Provider
CVSS
Unknown
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-22
Original CVE updated
2026-10-22
Advisory published
2026-10-22
Advisory updated
2026-10-22

Who should care

Defenders managing SAML SSO configurations, particularly those using Drupal SAML SSO - Service Provider, should assess exposure and prioritize remediation.

Why it matters

The SSRF vulnerability in Drupal SAML SSO - Service Provider allows attackers to make unauthorized requests, potentially leading to security control bypass, data breaches, or unauthorized access. Defenders should assess exposure and prioritize remediation.

  • Potential unauthorized requests on behalf of the server
  • Possible bypass of security controls
  • Potential data breaches or unauthorized access

Technical summary

The Drupal SAML SSO - Service Provider is vulnerable to Server-Side Request Forgery (SSRF) attacks in versions from 0.0.0 to 3.2.0. This vulnerability allows attackers to make unauthorized requests on behalf of the server, potentially leading to security control bypass, data breaches, or unauthorized access. The issue arises from the lack of proper validation and sanitization of user input, enabling attackers to craft malicious requests. Defenders should assess exposure and prioritize remediation by reviewing and updating SAML SSO - Service Provider to version 3.2

Defensive priority

Moderate

Recommended defensive actions

  • Review and update SAML SSO - Service Provider to version 3.2.0 or higher
  • Assess exposure and prioritize remediation for affected deployments
  • Monitor for potential SSRF attacks

Evidence notes

The CVE record and source item provide details on the SSRF vulnerability in Drupal SAML SSO - Service Provider. The affected versions range from 0.0.0 to 3.2.0.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-87953 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-87953

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-87953 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-87953

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.