CVE-2026-54319 Daytona: Path traversal in sandbox volume id mounts arbitrary host paths into the sandbox — cross-tenant data access and host escape
Attackers can mount arbitrary host paths into sandboxes via path traversal in volume IDs, enabling cross-tenant data access and host escape.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-54319?
CVE-2026-54319 is a medium-severity path traversal vulnerability in daytonaio daytona, published on 23 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Daytona is a secure and elastic infrastructure runtime for AI-generated code execution and agent workflows. Prior to 0.186, a sandbox volume reference (volumeId, which may also be a volume name) was forwarded to the runner and used to build the host bind-mount source path without confinement. A reference containing path-traversal sequences could in principle resolve the mount source outside the intended per-volume base directory. This vulnerability is fixed in 0.186.
Which versions are affected by CVE-2026-54319?
3 open source packages ship an affected version, including github.com/daytonaio/daytona.
| Package | Affected | Fixed in |
|---|---|---|
github.com/daytonaio/daytona Go | All versions | 0.186.0 |
github.com/daytonaio/daytona Go | All versions | 0.186.0 |
github.com/daytonaio/daytona Go | All versions | 0.186.0 |
How do I fix CVE-2026-54319?
Upgrade github.com/daytonaio/daytona to 0.186.0 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-54319 being exploited?
There is no known exploitation of CVE-2026-54319 in the wild and no public exploit code.
Sources
Also known as GHSA-fjv8-j4p5-cr9m, GO-2026-5367.