CVE-2026-18571
Last modified
CVE-2026-18571 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. A flaw was found in the user creation component of Keycloak when Fine-Grained Admin Permissions V2 (FGAP V2) is enabled. This issue allows a sub-administrator with permission to create users to add those users to any group, even groups the sub-administrator is not authorized to manage. EPSS estimates a 0.24% chance of exploitation in the next 30 days.
Description
A flaw was found in the user creation component of Keycloak when Fine-Grained Admin Permissions V2 (FGAP V2) is enabled. This issue allows a sub-administrator with permission to create users to add those users to any group, even groups the sub-administrator is not authorized to manage. This could lead to unauthorized access to sensitive information or elevated privileges for the newly created users.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Build Of Keycloak | All versions |
References
- https://access.redhat.com/security/cve/CVE-2026-18571Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2509759Issue Tracking, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-18571?
How severe is CVE-2026-18571?
How do I fix CVE-2026-18571?
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- 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.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-18556Authentication bypass using an alternate path or channel vul…7.4
- CVE-2026-1856The Appointment Booking Calendar plugin for WordPress is vul…6.4
- CVE-2026-18568XML::Sig versions from 0.29 before 0.72 for Perl allow signa…7.5
- CVE-2026-18569A flaw was found in the backchannel logout endpoint of the k…3.7
- CVE-2026-1857The Gutenberg Blocks with AI by Kadence WP plugin for WordPr…4.3
- CVE-2026-18570A flaw was found in the full-scope-disabled client-policy ex…5.4
- CVE-2026-18572Keycloak provides authorization services that allow administ…6.5
- CVE-2026-18573A flaw was found in the keycloak-services component of Keycl…6.5
- CVE-2026-18574An authentication bypass vulnerability in Check Point Securi…9.3
- CVE-2026-18577An incomplete patch for CVE-2026-18556 allows for authentica…8.1
- CVE-2026-1858wget2 accepts a server certificate with incorrect Key Usage …4.8
- CVE-2026-18581A vulnerability was determined in ggml-org llama.cpp e15efe0…3.3
Are you affected by CVE-2026-18571?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST