Auth bypass in Craftcms Cms
CVE-2026-84799
Craft CMS before 5.11.0 fails to enforce user-group scope filters on native GraphQL user relations including author, authors, uploader, draftCreator, and revisionCreator fields. Attackers with a scoped GraphQL token can query these relations to read usernames, email addresses, and full names of any content author or uploader including administrators.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (19.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/craftcms/cms/security/advisories/GHSA-4w9w-3x96-7ghp (vendor-advisory)
- www.vulncheck.com/advisories/craft-cms-before-5.11.0-pii-disclosure-via-graphql… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-84799?
- CVE-2026-84799 is a medium-severity vulnerability in Craftcms Cms, classified under Improper Authorization. CVSS score: 4.3/10. Published 2026-09-02.
- How severe is CVE-2026-84799?
- Medium severity. CVSS v3 base score is 4.3 out of 10.