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Statamic's missing authorization allows access to email addresses

Moderate severity GitHub Reviewed Published Feb 27, 2026 in statamic/cms • Updated Mar 1, 2026

Package

composer statamic/cms (Composer)

Affected versions

< 5.73.11
>= 6.0.0-alpha.1, < 6.4.0

Patched versions

5.73.11
6.4.0

Description

Impact

User email addresses were included in responses from the user fieldtype’s data endpoint for control panel users who did not have the “view users” permission.

Patches

This has been fixed in 5.73.11 and 6.4.0.

References

@jasonvarga jasonvarga published to statamic/cms Feb 27, 2026
Published by the National Vulnerability Database Feb 27, 2026
Published to the GitHub Advisory Database Mar 1, 2026
Reviewed Mar 1, 2026
Last updated Mar 1, 2026

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(9th percentile)

Weaknesses

Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action. Learn more on MITRE.

CVE ID

CVE-2026-28424

GHSA ID

GHSA-w878-f8c6-7r63

Source code

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