# CVE-2026-86114

## Summary

- **CVE ID:** CVE-2026-86114
- **Severity:** HIGH
- **CVSS Score:** 7.1 (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)
- **CWE:** CWE-862
- **Published:** Sep 5, 2026
- **Last Modified:** Sep 14, 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.

## Affected Products

- getarcaneapp — arcane (1.19.1)

## References

- [CNA](https://github.com/getarcaneapp/arcane)
- [CNA](https://github.com/geo-chen/oss/blob/main/arcane.md)
- [CNA](https://github.com/getarcaneapp/arcane/blob/v1.19.5/backend/api/handlers/templates.go)
- [CNA](https://github.com/getarcaneapp/arcane/commit/1500646aa91f)
- [CNA](https://github.com/getarcaneapp/arcane/releases/tag/v2.0.0)
- [CNA](https://www.vulncheck.com/advisories/arcane-before-2.0.0-missing-administrator-authorization-on-the-compose-template-mutation-endpoints)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.24%
- **EPSS Percentile:** 15.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-19._