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.

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.

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.

Affected products

Craftcms Cms

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (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.