# CVE-2026-47125: Arcane: Missing admin authorization on global variables endpoint

> An authenticated non-admin user can overwrite global environment variables, potentially leading to remote code execution or credential theft on the Docker host.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 29 May 2026
- **Updated:** 1 Jun 2026
- **Also known as:** GHSA-jpjh-jm2p-39hh, GO-2026-5476

## What is CVE-2026-47125?

CVE-2026-47125 is a high-severity missing authorization vulnerability in getarcaneapp arcane, published on 29 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.2, the PUT /api/environments/{id}/templates/variables endpoint, which writes the system-wide .env.global file used for variable substitution in every project's compose file, is missing an admin authorization check. Any authenticated non-admin user can call this endpoint with their bearer token or API key and overwrite the global environment variables that are merged into every project deployment. By overriding values like REGISTRY, IMAGE, DATABASE_URL, or SECRET_KEY that other users reference via ${VAR} in compose files, an attacker can redirect image pulls to attacker-controlled registries (supply-chain RCE on the Docker host), exfiltrate database credentials, or disrupt all projects. This vulnerability is fixed in 1.19.2.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-47125?

3 open source packages ship an affected version, including github.com/getarcaneapp/arcane/backend.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `github.com/getarcaneapp/arcane/backend` | Go | All versions | 1.19.2 |
| `github.com/getarcaneapp/arcane/backend` | Go | All versions | 1.19.2 |
| `github.com/getarcaneapp/arcane/backend` | Go | All versions | 1.19.2 |

## How do I fix CVE-2026-47125?

Upgrade github.com/getarcaneapp/arcane/backend to 1.19.2 or later.

## Is CVE-2026-47125 being exploited?

There is no known exploitation of CVE-2026-47125 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-47125 and fix it if it is affected.

What it is: CVE-2026-47125 is a high-severity missing authorization vulnerability in getarcaneapp arcane, published on 29 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-47125 in the wild and no public exploit code.

Affected packages and fixed versions:
- github.com/getarcaneapp/arcane/backend (Go): affected all versions; fixed in 1.19.2
- github.com/getarcaneapp/arcane/backend (Go): affected all versions; fixed in 1.19.2
- github.com/getarcaneapp/arcane/backend (Go): affected all versions; fixed in 1.19.2

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-47125/ (Markdown: https://insights.sbomify.com/CVE-2026-47125/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-47125
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-47125
- OSV: https://osv.dev/vulnerability/CVE-2026-47125

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-47125/
Summaries are generated and may contain mistakes; the official description above is the record.