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CVE-2026-56393

MEDIUM
4.8
CVSS 3.1
Description
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.

Metadata

CVE ID
CVE-2026-56393
State
PUBLISHED
Assigner
VulnCheck
Reserved
2026-06-21 12:37 UTC
Published
2026-06-21 13:27 UTC
Last updated
2026-06-21 13:27 UTC
Primary CWE
CWE-79
Improper Neutralization of Input During Web Page Generation …
Vendor / Product
craftcms / cms
Sources
cve.org  ·  NVD

Severity & Metrics

4.8 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Affected products (1)
VendorProductPlatformVersions
craftcms cms — 5.0.0-RC1 < 5.9.0-beta.1, 5.9.0-beta.1, 4.0.0-RC1 < 4.17.0-beta.1, 4.17.0-beta.1
Weakness (CWE)
CWESourceDescription
CWE-79 cna Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS scores (2)
ScoreSeverityVersionSourceVector
4.8 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.6 MEDIUM 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
References (4)
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