CVE-2026-55808

CVE-2026-55808: Drupal core - Moderately critical - Improper validation - SA-CORE-2026-009

Vendor Drupal

Product Drupal core

Weakness CWE-79 · XSS

Published July 10, 2026

Last update July 10, 2026

View on NVD All CVEs

CVSS base score

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What the vulnerability does

01Description

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.*.

Key dates

02Disclosure timeline

July 10, 2026 CVE published

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-55808 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

Related vulnerabilities

Identifiers

CVE CVE-2026-55808

CWE CWE-79

Affected versions

Vendor Drupal

Product Drupal core

Affected ≥ 0.0.0 and < 10.5.12

Vendor Drupal

Product Drupal core

Affected ≥ 10.6.0 and < 10.6.11

Vendor Drupal

Product Drupal core

Affected ≥ 11.2.0 and < 11.2.14

Vendor Drupal

Product Drupal core

Affected ≥ 11.3.0 and < 11.3.12

Vendor Drupal

Product Drupal core

Affected ≥ 0.0.0 and < 11.0.*

Vendor Drupal

Product Drupal core

Affected ≥ 0.0.0 and < 11.1.*

CVE-2026-55808: Drupal core - Moderately critical - Improper validation - SA-CORE-2026-009

01Description

02Disclosure timeline

03References

04Related CVE