Authorization Flaw in Craft CMS Affects Sensitive Data Access
CVE-2026-28696

8.7HIGH

Key Information:

Vendor

Craftcms

Status
Cms
Vendor
CVE Published:
4 March 2026

What is CVE-2026-28696?

Craft CMS has a vulnerability in the GraphQL directive @parseRefs, which is designed to parse internal reference tags. This flaw allows both authenticated users and unauthenticated guests (with a Public Schema enabled) to access sensitive attributes of any element in the CMS due to insufficient authorization checks in Elements::parseRefs. As a result, unauthorized users can read data they should not have access to, potentially exposing sensitive information. The issue has been addressed in versions 4.17.0-beta.1 and 5.9.0-beta.1.

Affected Version(s)

cms >= 4.0.0-RC1, < 4.17.0-beta.1 < 4.0.0-RC1, 4.17.0-beta.1

cms >= 5.0.0-RC1, < 5.9.0-beta.1 < 5.0.0-RC1, 5.9.0-beta.1

References

https://github.com/craftcms/cms/security/advisories/GHSA-...
x_refsource_CONFIRM
https://github.com/craftcms/cms/commit/4d98a07e47580f1712...
x_refsource_MISC

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.