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CVE-2026-28696

Craftcms Craft CMS broken access control

7.5 HIGHPublic exploitEPSS 0.44%
  1. Published4 Mar 2026

Description

Craft is a content management system (CMS). Prior to 4.17.0-beta.1 and 5.9.0-beta.1, the GraphQL directive @parseRefs, intended to parse internal reference tags (e.g., {user:1:email}), can be abused by both authenticated users and unauthenticated guests (if a Public Schema is enabled) to access sensitive attributes of any element in the CMS. The implementation in Elements::parseRefs fails to perform authorization checks, allowing attackers to read data they are not authorized to view. This vulnerability is fixed in 4.17.0-beta.1 and 5.9.0-beta.1.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Craftcms Craft CMS> 4.0.0 < 4.17.0 · > 5.0.0 < 5.9.0 · 4.0.0 · 5.0.0

Remediation

Fixed in
Craftcms Craft CMS≥ 4.17.0

References

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Frequently asked

Is CVE-2026-28696 being actively exploited?

CVE-2026-28696 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.44%.

How severe is CVE-2026-28696?

CVE-2026-28696 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.44% probability of exploitation.

Which products are affected by CVE-2026-28696?

Affected products include Craftcms Craft CMS.

How do I fix CVE-2026-28696?

Upgrade affected software to a fixed version, for example Craftcms Craft CMS 4.17.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-28696 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.