Medium severity · published Jun 21, 2026
CVE-2026-56383
Craft CMS - Stored XSS in Table Field via Row Heading Column Type
4.8
CVSS
0.2%
EPSS
No
On KEV
Description
Craft CMS contains a stored cross-site scripting (XSS) vulnerability in the editableTable.twig component when using the 'Row Heading' column type. The application fails to sanitize input within row heading default values, allowing an attacker with an administrator account (with allowAdminChanges enabled) to inject arbitrary JavaScript that executes when another user views a page containing the affected table field. Affected versions are >= 4.5.0-beta.1 through 4.16.18 and >= 5.0.0-RC1 through 5.8.22; fixed in 4.16.19 and 5.8.23.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CM
cms · craftcms
4.5.0-beta.1 before 4.16.19; 5.0.0-RC1 before 5.8.23 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56383
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56383
github.com
https://github.com/craftcms/cms/commit/7b372de262b8d9d2ce859f32780c3715719b6f5a
github.com
https://github.com/craftcms/cms/security/advisories/GHSA-6j87-m5qx-9fqp
www.vulncheck.com
https://www.vulncheck.com/advisories/craft-cms-stored-xss-in-table-field-via-row-heading-column-type
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