CVE-2026-56393

Craft CMS 4.x (>= 4.0.0-RC1, < 4.17.0-beta.1) and 5.x (>= 5.0.0-RC1, < 5.9.0-beta.1) contain multiple stored cross-site scripting vulnerabilities where settings names and field option labels are rendered without sanitization (e.g., via the checkbox.twig template, which used {{ label|raw }}). An authenticated administrator (with allowAdminChanges enabled) can inject malicious payloads into section names, volume names, user group names, global set names, generated field names, checkbox/radio option labels, and custom source labels, causing arbitrary JavaScript to execute in other users' control-panel sessions. Fixed in 4.17.0-beta.1 and 5.9.0-beta.1.

CVSS v3 4.8 MEDIUM

4.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.7 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/craftcms/cms/commit/67780a778c6ec04e68e64a0b1177c168306144a2
https://github.com/craftcms/cms/commit/943152d2246b36f12adf161a03b8695b773d9276
https://github.com/craftcms/cms/security/advisories/GHSA-4mgv-366x-qxvx
https://www.vulncheck.com/advisories/craft-cms-multiple-stored-cross-site-scripting-in-settings-names-and-field-options
https://github.com/craftcms/cms/security/advisories/GHSA-4mgv-366x-qxvx

Configurations

No configuration.

History

22 Jun 2026, 14:17

Type	Values Removed	Values Added
References	~~() https://github.com/craftcms/cms/security/advisories/GHSA-4mgv-366x-qxvx -~~	() https://github.com/craftcms/cms/security/advisories/GHSA-4mgv-366x-qxvx -

21 Jun 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-21 14:16

Updated : 2026-06-22 18:36

NVD link : CVE-2026-56393

Mitre link : CVE-2026-56393

CVE.ORG link : CVE-2026-56393

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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