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PatchSiren cyber security CVE debrief

CVE-2026-87949 Drupal CVE debrief

A cross-site scripting vulnerability exists in the SAML SSO - Service Provider module for Drupal, affecting versions from 0.0.0 to 3.2.0. This issue allows for Cross-Site Scripting (XSS) attacks. The vulnerability was published on 2026-10-22T01:21:54.603Z and last modified on 2026-10-22T16:36:53.769Z. Defenders should prioritize verifying exposure of SAML SSO - Service Provider installations, especially those with untrusted input, and review version information for accurate vulnerability assessment.

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

Drupal administrators and security teams responsible for SAML SSO - Service Provider installations should assess exposure and prioritize remediation efforts.

Why it matters

CVE-2026-87949 is a cross-site scripting vulnerability in the SAML SSO - Service Provider module for Drupal, affecting versions from 0.0.0 to 3.2.0. Defenders should prioritize verifying exposure, reviewing version information, and implementing additional security measures to prevent XSS attacks.

  • Verify exposure of SAML SSO - Service Provider installations to prevent potential XSS attacks
  • Review and update affected installations to version 3.2.0 or later to mitigate vulnerability
  • Implement additional security measures to prevent XSS attacks

Technical summary

The SAML SSO - Service Provider module for Drupal is vulnerable to cross-site scripting (XSS) attacks due to improper neutralization of input during web page generation. This issue affects versions from 0.0.0 to 3.2.0. The vulnerability allows attackers to inject malicious scripts into web pages, potentially leading to unauthorized actions or data breaches. To mitigate this vulnerability, it is recommended to review and update affected installations to version 3.2.0 or later and implement additional security measures to prevent XSS attacks.

Defensive priority

Defenders should prioritize verifying exposure of SAML SSO - Service Provider installations, especially those with untrusted input, and review version information for accurate vulnerability assessment.

Recommended defensive actions

  • Verify SAML SSO - Service Provider version information to determine exposure
  • Review and update affected installations to version 3.2.0 or later
  • Implement additional security measures to prevent XSS attacks

Evidence notes

The CVE record and source item provide details on the vulnerability, but additional information from official sources may be necessary for comprehensive risk assessment.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-87949 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-87949

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

  • CVE-2026-87949 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-87949

    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.