CVE-2026-45625: Arcane missing authorization in Git repository API endpoints

CVE-2026-45625 · Severity: critical · CVSS 9.9 · Published 2026-05-29

Arcane, a management interface for Docker and GitOps workflows, contains a security flaw that allows any logged-in user to steal sensitive Git credentials. By exploiting a lack of administrative checks, a standard user can redirect repository settings to a server they control, forcing the system to send them decrypted access tokens or SSH keys. This could lead to a full compromise of an organization's private source code and automated deployment pipelines.

Technologies: github.com/getarcaneapp/arcane/backend (Go). Vendors: Go.

Quick answers

Is CVE-2026-45625 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-45625 being exploited in the wild.
How severe is CVE-2026-45625?
Critical severity, with a CVSS score of 9.9, published 29 May 2026.
Which products and versions are affected?
github.com/getarcaneapp/arcane/backend (Go) <= 1.18.1, SEMVER:introduced=0,fixed=1.19.0.
Is there a fix for CVE-2026-45625?
Yes. github.com/getarcaneapp/arcane/backend (Go): upgrade to 1.19.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-45625 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-45625?
Check whether you run github.com/getarcaneapp/arcane/backend (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • github.com/getarcaneapp/arcane/backend (Go): upgrade to 1.19.0 or later
    go get github.com/getarcaneapp/arcane/backend@v1.19.0

Technical details

A missing authorization check (CWE-862) exists in Arcane's huma-based REST API. While the authentication middleware validates JWTs, eight endpoints under /api/customize/git-repositories and /api/git-repositories/sync fail to call the checkAdmin(ctx) helper, allowing any authenticated user to perform CRUD operations on Git configurations. An attacker can update an existing repository's URL to a malicious endpoint while omitting the token/sshKey fields; the service layer preserves the existing encrypted credentials during partial updates. When the attacker subsequently triggers a connection test or file browse operation, the application decrypts the legitimate credentials and transmits them as HTTP Basic auth or SSH keys to the attacker's server. This vulnerability is resolved in version 1.19.0.

Affected products

  • getarcaneapp Arcane < 1.19.0

Identifiers

  • CVE-2026-45625
  • GHSA-7h26-hg47-p9hx
  • GO-2026-5220

Timeline

  • 2026-05-11: advisory: Original GitHub Security Advisory published
  • 2026-05-29: disclosed: CVE published to NVD

References

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