Medium severity · published Sep 2, 2026
CVE-2026-84799
Craft CMS before 5.11.0 PII Disclosure via GraphQL User Relations
4.3
CVSS
0.3%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CM
cms · craftcms
5.0.0-RC1 before 5.11.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-84799
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-84799
github.com
https://github.com/craftcms/cms/security/advisories/GHSA-4w9w-3x96-7ghp
www.vulncheck.com
https://www.vulncheck.com/advisories/craft-cms-before-5.11.0-pii-disclosure-via-graphql-user-relations
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