CVE-2026-86114CWE-862broken-access-control

CVE-2026-86114

Medium · published September 5, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
36.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
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
EPSS
0.00430 · 36.1th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-09-05T14:16Z
References (6)
https://github.com/geo-chen/oss/blob/main/arcane.md · [email protected]https://github.com/getarcaneapp/arcane · [email protected]https://github.com/getarcaneapp/arcane/blob/v1.19.5/backend/api/handlers/templates.go · [email protected]https://github.com/getarcaneapp/arcane/commit/1500646aa91f · [email protected]https://github.com/getarcaneapp/arcane/releases/tag/v2.0.0 · [email protected]https://www.vulncheck.com/advisories/arcane-before-2.0.0-missing-administrator-authorization-on-the-compose-template-mutation-endpoints · [email protected]
EPSS history
Timeline
  • 07 SEP 03:36Z
    EPSS moved — → 0%
    epss
  • 05 SEP 09:59Z
    Arcane before 2.0.0 Missing Administrator Authorization on the Compose Template Mutation Endpoints
    cvelistv5