CVE-2026-111681
EFAK through 5.1.0 Privilege Escalation via /api/users REST API
- State
- Published
- Severity
- 8.7 High
- Published
- Oct 16, 2026
- Updated
- Oct 16, 2026
- Reserved
- Oct 16, 2026
Description
EFAK through 5.1.0 contains a missing authorization vulnerability that allows authenticated low-privilege users to manage accounts because the /api/users endpoints lack administrator role checks. Attackers can send POST, PUT, or DELETE requests to UserController to grant themselves ROLE_ADMIN, create administrators, or delete users, gaining control of managed Kafka clusters.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
EFAKsmartloli |
|
References
- https://hackmd.io/@hieuPenguinnn/efak-missing-admin-gate-user-management-apithird-party-advisory
- https://github.com/smartloli/EFAK/blob/v5.1.0/efak-web/src/main/java/org/kafka/eagle/web/security/config/WebSecurityConfig.java#L89-L93technical-description
- https://github.com/smartloli/EFAK/blob/v5.1.0/efak-web/src/main/java/org/kafka/eagle/web/controller/UserController.java#L218-L302technical-description
- https://github.com/smartloli/EFAKproduct
- VulnCheck Advisory: EFAK through 5.1.0 Privilege Escalation via /api/users REST APIthird-party-advisory
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