Stored Cross-site Scripting Vulnerability in Craft CMS
CVE-2026-27126

5.9MEDIUM

Key Information:

Vendor

Craftcms

Status
Cms
Vendor
CVE Published:
24 February 2026

What is CVE-2026-27126?

Craft CMS versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22 are vulnerable to a stored Cross-site Scripting (XSS) attack via the editableTable.twig component when the html column type is used. The vulnerability arises from insufficient input sanitization, enabling an attacker with administrative privileges to inject arbitrary JavaScript code into a table field. This malicious code executes when other users view pages containing the compromised table. For proper security practices, it is advised to ensure allowAdminChanges is disabled in production environments. Users are encouraged to upgrade to versions 4.16.19 and 5.8.23 which provide necessary patches.

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Affected Version(s)

cms >= 4.5.0-RC1, < 4.16.19 < 4.5.0-RC1, 4.16.19

cms >= 5.0.0-RC1, < 5.8.23 < 5.0.0-RC1, 5.8.23

References

https://github.com/craftcms/cms/security/advisories/GHSA-...
x_refsource_CONFIRM
https://github.com/craftcms/cms/commit/f5d488d9bb6eff7670...
x_refsource_MISC

CVSS V4

Score:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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