Vulnerability · Published May 29, 2026 · Assigned by GitHub_M

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

High 8.8

In plain English

A high-severity missing authorization in arcane from getarcaneapp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.2%top 84.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/getarcaneapp/arcane/backend	1.19.2	GHSA-jpjh-jm2p-39hh
Go	github.com/getarcaneapp/arcane/backend	1.19.2	GO-2026-5476

Affected products (as reported)

Vendor	Product	Versions
getarcaneapp	arcane	< 1.19.2

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/getarcaneapp/arcane/security/advisories/GHSA-jpjh-jm2p-39hh x_refsource_CONFIRM