Th0rgal sandboxed.sh: Container escape via nsenter without --root
Summary
sandboxed.sh through version 1.3.0 lets code running in a container workspace access the host filesystem. The nsenter call attaches without --root, so absolute host paths can be resolved and host files read or modified, bypassing the documented isolation. An attacker needs low-privileged access that allows running code in a workspace, for example via an agent acting on injected instructions.
Affected
- sandboxed.sh through 1.3.0 (per CVE record and VulnCheck)
- Version mapping to the project's release numbers: Unknown.
Fixed in
- Unknown. No vendor advisory or fixed release found.
- The referenced commit 4ab42e91 reportedly adds an opt-in nsenter root setting; whether the default configuration is fixed is Unknown.
Workaround
- Do not run sandboxed.sh on hosts that hold sensitive files, credentials or business data; use a dedicated VM or host.
- Limit who can start missions and which agents or prompts can reach workspaces.
- Check whether the opt-in nsenter root setting exists in your version and whether it is enabled.
- Do not expose the web UI or API to the internet or untrusted networks.
Exploitation
- Not marked as known exploited in the sources checked (CISA KEV: No).
- CISA SSVC: exploitation none, automatable no, technical impact total.
- No public proof of concept found.
- EPSS: 0.00126.
Our recommendation
- Check whether sandboxed.sh is deployed in your organisation, especially on shared hosts.
- If it is used, isolate it on a dedicated VM and restrict access to trusted users and agents.
- Do not expose it to untrusted networks.
- Review the VulnCheck advisory and the GitHub repository regularly and apply a fixed release once published.
- Monitor host file access from container workspaces.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- VulnCheck advisory www.vulncheck.com
- Fix commit 4ab42e91 github.com
- Orb repository github.com
- OSV record osv.dev
- sandboxed.sh repository github.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 02:25.
Original description (NVD)
sandboxed.sh through 1.3.0 contains a container escape vulnerability that allows code in container workspaces to access the host filesystem because nsenter attaches without --root. Agent-run code in a container workspace can resolve absolute paths on the host to read and modify host files, bypassing documented isolation.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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