CVE-2026-84799
Received Received - Intake

Craft CMS 5.11.0 GraphQL User Relation Information Disclosure

Publication date: 2026-09-02

Last updated on: 2026-09-02

Assigner: VulnCheck

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 Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-02
Last Modified
2026-09-02
Generated
2026-09-02
AI Q&A
2026-09-02
EPSS Evaluated
N/A
NVD
CVE-2026-84799
EUVD
EUVD-2026-69911

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
craftcms craft_cms to 5.11.0 (exc)
craftcms craft_cms From 5.0.0-RC1 (inc) to 5.11.0 (exc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-285 The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

CVE-2026-84799 is a vulnerability in Craft CMS versions before 5.11.0 where user-group scope filters are not enforced on GraphQL user relations. Attackers with a scoped GraphQL token can query relations like author or uploader to access sensitive user data including usernames, email addresses, and full names of any content author or uploader, including administrators.

Detection Guidance

To detect this vulnerability, check Craft CMS version with: composer show craftcms/cms. If version is below 5.11.0, it is vulnerable. Review GraphQL queries for author, authors, uploader, draftCreator, or revisionCreator fields to see if they return unauthorized user data.

Impact Analysis

This vulnerability allows unauthorized access to sensitive user information such as usernames, email addresses, and full names of content authors and uploaders. Attackers with a scoped GraphQL token could retrieve data of all users, including administrators, potentially leading to privacy breaches or further targeted attacks.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR and HIPAA due to unauthorized exposure of personally identifiable information (PII). GDPR requires protection of personal data, and HIPAA mandates safeguarding protected health information. Unauthorized access to such data may result in legal penalties and reputational damage.

Mitigation Strategies

Immediately upgrade Craft CMS to version 5.11.0 or later. Review and restrict GraphQL token scopes to only necessary permissions. Audit existing GraphQL queries for unauthorized data exposure.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-84799. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart