CVE-2026-86114: Getarcaneapp Arcane

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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: from 1.19.1, before 2.0.0 (fixed in 2.0.0)

Published 2026-09-05. Last modified 2026-09-23.