---
id: CVE-2026-86114
title: >-
  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
summary: >-
  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 co…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-862
vendor: getarcaneapp
product: arcane
affected:
  - arcane >= 1.19.1 < 2.0.0
published: '2026-09-05'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T17:17:46.890'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86114'
references:
  - url: 'https://github.com/geo-chen/oss/blob/main/arcane.md'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/getarcaneapp/arcane'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/getarcaneapp/arcane/blob/v1.19.5/backend/api/handlers/templates.go
    label: disclosure@vulncheck.com
  - url: 'https://github.com/getarcaneapp/arcane/commit/1500646aa91f'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/getarcaneapp/arcane/releases/tag/v2.0.0'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/arcane-before-2.0.0-missing-administrator-authorization-on-the-compose-template-mutation-endpoints
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.0043
epssPercentile: 0.34472
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T19:22:01.593868Z'
ingestedAt: '2026-09-06T07:51:55.841Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.