CVE-2026-86114
Arcane before 2.0.0 Missing Administrator Authorization on the Compose Template Mutation Endpoints
- State
- Published
- Severity
- 7.1 High
- Published
- Sep 5, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 5, 2026
Description
Arcane versions before 2.0.0 fail to properly restrict template operations, allowing default user role accounts to create, modify, and delete compose templates including instance-wide defaults. Attackers can inject malicious container configurations with privileged settings or host path mounts that execute with administrative privileges when deployed by administrators.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N | VulnCheck |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
arcanegetarcaneapp |
|
References
- Researcher write-uptechnical-description
- Template mutations registered without RequireAdmintechnical-description
- feat: full rbac permissions (#2724)patch
- arcane v2.0.0 Release Notesrelease-notes
- https://github.com/getarcaneapp/arcaneproduct
- VulnCheck Advisory: Arcane before 2.0.0 Missing Administrator Authorization on the Compose Template Mutation Endpointsthird-party-advisory
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