Bug 2499255 (CVE-2026-55808)

Summary: CVE-2026-55808 drupal: Drupal core: Cross-site Scripting (XSS) via improper input neutralization
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Drupal core. This improper neutralization of input during web page generation, commonly known as Cross-site Scripting (XSS), allows an attacker to inject malicious scripts into web pages. When a user views an affected page, these scripts can execute in their browser. This could lead to unauthorized access to user data, session hijacking, or defacement of the website.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2499651    
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Description OSIDB Bzimport 2026-07-10 22:02:22 UTC
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Drupal core allows Cross-Site Scripting (XSS). This issue affects Drupal core versions: from 0.0.0 to 10.5.12, from 10.6.0 to 10.6.11, from 11.2.0 to 11.2.14, from 11.3.0 to 11.3.12, from 0.0.0 to 11.0.*, from 0.0.0 to 11.1.*.