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CVE-2026-16640 Drupal CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-25T23:16:56.787Z and has not been modified since then. The CVE-2026-16640 vulnerability is an Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) issue in Drupal Search API Autocomplete. This issue allows for reflected XSS and affects versions from 0.0.0 to 1.12.0, with a CVSS score of 6.1 indicating medium severity. Defenders should verify the presence of Search API Autocomplete in their environments, review version numbers, and assess potential exposure. Evidence is based on official CVE and NVD records.

Vendor
Drupal
Product
Search API Autocomplete
CVSS
MEDIUM 6.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-25
Original CVE updated
2026-08-26
Advisory published
2026-08-25
Advisory updated
2026-08-26

Who should care

Drupal users and administrators who have Search API Autocomplete installed should be aware of this vulnerability and take steps to mitigate it. This includes reviewing and updating Search API Autocomplete to version 1.12.0 or later, implementing input validation and sanitization for user-supplied data, and monitoring for suspicious activity. Security teams should prioritize reviewing and updating Search API Autocomplete, and consider implementing compensating controls as needed.

Technical summary

The CVE-2026-16640 vulnerability is an Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) issue in Drupal Search API Autocomplete. The vulnerability allows for reflected XSS and affects versions from 0.0.0 to 1.12.0. The CVSS score is 6.1, indicating a medium severity.

Defensive priority

Drupal users should prioritize reviewing and updating Search API Autocomplete to version 1.12.0 or later to address the reflected XSS vulnerability.

Recommended defensive actions

  • Review and update Search API Autocomplete to version 1.12.0 or later
  • Implement input validation and sanitization for user-supplied data
  • Monitor for suspicious activity and implement compensating controls as needed

Evidence notes

The CVE-2026-16640 record indicates an Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) vulnerability in Drupal Search API Autocomplete. The issue affects versions from 0.0.0 to 1.12.0. Evidence is based on official CVE and NVD records. Defenders should verify the presence of Search API Autocomplete in their environments, review version numbers, and assess potential exposure.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-16640 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-16640

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

  • CVE-2026-16640 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-16640

    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.