Auth bypass in Craftcms Cms
CVE-2026-28696
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.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: -0.000
Affected products
- Craftcms Cms — versions >= 4.0.0-RC1, < 4.17.0-beta.1, >= 5.0.0-RC1, < 5.9.0-beta.1
- Craftcms Craft Cms — versions 4.0.0, 5.0.0
Weakness classification (CWE)
References
- github.com/craftcms/cms/security/advisories/GHSA-7x43-mpfg-r9wj (Exploit, Patch, Mitigation, Vendor Advisory)
- github.com/craftcms/cms/commit/4d98a07e47580f1712095825d3e3c4d67bc9f8b9 (Patch)
Frequently asked questions
- What is CVE-2026-28696?
- CVE-2026-28696 is a high-severity vulnerability in Craftcms Cms, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2026-03-04.
- How severe is CVE-2026-28696?
- High severity. CVSS v3 base score is 7.5 out of 10.