Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.0, Arcane's huma-based REST API exposes nine endpoints under /api/customize/git-repositories and /api/git-repositories/sync for managing GitOps source repositories and their stored credentials. Eight of those endpoints (list, create, get, update, delete, test, listBranches, browseFiles) never call the checkAdmin(ctx) helper that every other admin-managed resource (container registries, environments, users, API keys, swarm, settings, system, notifications, events) uses, and the huma authentication middleware deliberately enforces only authentication, not the admin role. As a result, any logged-in user with the default user role can list, create, modify, delete, and test git repository configurations. By repointing an existing repository's URL to an attacker-controlled host while omitting the token/sshKey fields (which UpdateRepository only rewrites when explicitly supplied), the attacker causes Arcane to decrypt the legitimate PAT/SSH key on its next /test, /branches, or /files call and present it as HTTP Basic auth (or SSH key auth) to the attacker's host — producing a one-step exfiltration of plaintext Git credentials. This vulnerability is fixed in 1.19.0.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-7h26-hg47-p9hx Arcane Backend: Missing admin authorization on git repository endpoints allows non-admin users to exfiltrate stored Git credentials and tamper with GitOps configs
Fixes

Solution

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Workaround

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History

Fri, 29 May 2026 18:45:00 +0000

Type Values Removed Values Added
First Time appeared Getarcaneapp
Getarcaneapp arcane
Vendors & Products Getarcaneapp
Getarcaneapp arcane

Fri, 29 May 2026 17:30:00 +0000

Type Values Removed Values Added
Description Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.0, Arcane's huma-based REST API exposes nine endpoints under /api/customize/git-repositories and /api/git-repositories/sync for managing GitOps source repositories and their stored credentials. Eight of those endpoints (list, create, get, update, delete, test, listBranches, browseFiles) never call the checkAdmin(ctx) helper that every other admin-managed resource (container registries, environments, users, API keys, swarm, settings, system, notifications, events) uses, and the huma authentication middleware deliberately enforces only authentication, not the admin role. As a result, any logged-in user with the default user role can list, create, modify, delete, and test git repository configurations. By repointing an existing repository's URL to an attacker-controlled host while omitting the token/sshKey fields (which UpdateRepository only rewrites when explicitly supplied), the attacker causes Arcane to decrypt the legitimate PAT/SSH key on its next /test, /branches, or /files call and present it as HTTP Basic auth (or SSH key auth) to the attacker's host — producing a one-step exfiltration of plaintext Git credentials. This vulnerability is fixed in 1.19.0.
Title Arcane: Missing admin authorization on git repository endpoints allows non-admin users to exfiltrate stored Git credentials and tamper with GitOps configs
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-29T17:10:57.210Z

Reserved: 2026-05-12T20:31:43.449Z

Link: CVE-2026-45625

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-29T18:17:10.267

Modified: 2026-05-29T18:17:10.267

Link: CVE-2026-45625

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-29T18:30:05Z

Weaknesses