CVE-2026-18986
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Stored XSS in Drupal Entity Browser

Publication date: 2026-09-02

Last updated on: 2026-09-02

Assigner: Drupal.org

Description
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Entity Browser allows Stored XSS. This issue affects Entity Browser versions: from 0.0.0 to 2.16.0.

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Meta Information

Published
2026-09-02
Last Modified
2026-09-02
Generated
2026-09-02
AI Q&A
2026-09-02
EPSS Evaluated
N/A
NVD
CVE-2026-18986
EUVD
EUVD-2026-69994

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
drupal entity_browser From 0.0.0 (inc) to 2.16.0 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a Stored Cross-site Scripting (XSS) vulnerability in Drupal's Entity Browser module. It allows attackers to inject malicious scripts into web pages by exploiting improper input neutralization during page generation. The flaw exists in versions 0.0.0 to 2.16.0 of the module.

Detection Guidance

To detect this vulnerability, inspect Drupal installations for Entity Browser versions 0.0.0 to 2.16.0. Check for stored XSS by reviewing user input fields that may render untrusted data. Use commands like 'drush pm-list' to list modules and versions. Look for suspicious JavaScript in stored content or logs.

Impact Analysis

An attacker could exploit this to steal user sessions, deface websites, or deliver malware. Users visiting affected pages may have their data compromised or be redirected to malicious sites without their knowledge.

Compliance Impact

This vulnerability could lead to unauthorized data access or disclosure, violating GDPR's data protection requirements and HIPAA's security rules. Organizations may face fines or penalties for failing to protect user data adequately.

Mitigation Strategies

Update Drupal Entity Browser to a version beyond 2.16.0 to address the stored XSS vulnerability.

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