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Description

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.*.

PUBLISHED Reserved 2026-06-17 | Published 2026-07-10 | Updated 2026-07-13 | Assigner drupal

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting")

Product status

0.0.0 (semver) before 10.5.12
affected

10.6.0 (semver) before 10.6.11
affected

11.2.0 (semver) before 11.2.14
affected

11.3.0 (semver) before 11.3.12
affected

0.0.0 (semver) before 11.0.*
affected

0.0.0 (semver) before 11.1.*
affected

Credits

cantina_security finder

Björn Brala (bbrala) remediation developer

Kim Pepper (kim.pepper) remediation developer

Lee Rowlands (larowlan) remediation developer

Damien McKenna (damienmckenna) coordinator

Greg Knaddison (greggles) coordinator

Lee Rowlands (larowlan) coordinator

Dave Long (longwave) coordinator

Juraj Nemec (poker10) coordinator

Jess (xjm) coordinator

References

www.drupal.org/sa-core-2026-009

cve.org (CVE-2026-55808)

nvd.nist.gov (CVE-2026-55808)

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