Arcane: Delegated users:update permission allows admin account takeover via password reset (no privilege-hierarchy check)

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-96627
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-16 22:18:58 UTC
Updated2026-10-16 22:18:58 UTC
DescriptionArcane 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-266 | CWE-269 | CWE-266 CWE-266: Incorrect Privilege Assignment | CWE-269 CWE-269: Improper Privilege Management

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Getarcaneapp Arcane affected < 2.6.0 Not specified

References

ReferenceSourceLinkTags
github.com/getarcaneapp/arcane/releases/tag/backend/v2.6.0 [email protected] github.com
github.com/getarcaneapp/arcane/commit/21ea962f86d967dac8ae02a050f6e5f043... [email protected] github.com
github.com/getarcaneapp/arcane/pull/3426 [email protected] github.com
github.com/getarcaneapp/arcane/security/advisories/GHSA-pw5q-rjx4-7f7p [email protected] github.com
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