CVE-2026-0871
Last modified
CVE-2026-0871 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. A flaw was found in Keycloak. An administrator with `manage-users` permission can bypass the "Only administrators can view" setting for unmanaged attributes, allowing them to modify these attributes. EPSS estimates a 0.31% chance of exploitation in the next 30 days.
Description
A flaw was found in Keycloak. An administrator with `manage-users` permission can bypass the "Only administrators can view" setting for unmanaged attributes, allowing them to modify these attributes. This improper access control can lead to unauthorized changes to user profiles, even when the system is configured to restrict such modifications.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Build Of Keycloak | < 26.4.9 |
| Redhat | Build Of Keycloak | All versions |
| Redhat | Keycloak | < 26.4.0 |
References
- https://access.redhat.com/errata/RHSA-2026:2365Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:2366Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-0871Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2428881Issue Tracking, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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