CVE-2026-23944 Arcane allows unauthenticated proxy access to remote environments
Unauthenticated attackers can access remote Docker environment resources via a proxy middleware flaw, leading to data exposure or unauthorized changes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-23944?
CVE-2026-23944 is a high-severity authentication bypass vulnerability in getarcaneapp arcane, published on 19 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to version 1.13.2, unauthenticated requests could be proxied to remote environment agents, allowing access to remote environment resources without authentication. The environment proxy middleware handled `/api/environments/{id}/...` requests for remote environments before authentication was enforced. When the environment ID was not local, the middleware proxied the request and attached the manager-held agent token, even if the caller was unauthenticated. This enabled unauthenticated access to remote environment operations (e.g., listing containers, streaming logs, or other agent endpoints). An unauthenticated attacker could access and manipulate remote environment resources via the proxy, potentially leading to data exposure, unauthorized changes, or service disruption. Version 1.13.2 patches the vulnerability.
Weakness: CWE-306
Which versions are affected by CVE-2026-23944?
It affects 1 product.
Products include Arcane Arcane.
How do I fix CVE-2026-23944?
No fix has been published for CVE-2026-23944 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-23944 being exploited?
There is no known exploitation of CVE-2026-23944 in the wild and no public exploit code.
Other vulnerabilities in getarcaneapp arcane
Sources
Also known as GHSA-2jv8-39rp-cqqr.