CVE-2026-96627
High
Description
Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 2.6.0, UpdateUser in backend/api/handlers/users.go sets PasswordHash for any target without comparing caller and target privilege. A holder of delegated users:update permission can submit a password change for the global administrator, replace the administrator password, and authenticate as that account, resulting in complete global administrator account takeover. This issue is fixed in version 2.6.0.
SeverityHigh
CVSS8.8
Exploit probability—
ProductGithub.com/getarcaneapp/arcane/backend/v2
PublishedOct 16, 2026
First seenOct 16, 2026
Weakness typeCWE-266CWE-266CWE-269Improper privilege management
How to fix
Update
- github.com/getarcaneapp/arcane/backend/v22.6.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/getarcaneapp/arcane/backend/v2Go | v < 2.6.0 | 2.6.0 |
| github.com/getarcaneapp/arcane/backendGo | No range specified | — |
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