Vulnerability record · CVE-2026-86114 · published 5 September 2026

CVE-2026-86114: Missing authorization vulnerability

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.

7.1 CVSS 4.0 High EPSS 0.43% · top 65.3% CWE-862 · Missing authorization Deferred

7.1CVSS 4.0 base score

0.43%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

6References

23 Sep 2026Last modified by NVD

Description

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

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

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-86114), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.