Vulnerability Description
Windmill prior to 1.703.2 contains an incorrect default permissions vulnerability in nsjail sandbox configuration files where /etc is bind-mounted without read-write restrictions, allowing authenticated users to write arbitrary entries to /etc/hosts, /etc/resolv.conf, and /etc/ssl/certs/ca-certificates.crt from within script execution sandboxes. Attackers can exploit persistent poisoned entries across all subsequent script executions on the same worker pod to redirect hostnames, intercept DNS queries, perform transparent HTTPS man-in-the-middle attacks, and intercept WM_TOKEN JWTs to gain workspace-admin access to other users' workspaces.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/windmill-labs/windmill/commit/f8467f38c8a053117ce62f96684cfb1
- https://github.com/windmill-labs/windmill/pull/9194
- https://github.com/windmill-labs/windmill/releases/tag/v1.703.2
- https://www.vulncheck.com/advisories/windmill-incorrect-default-permissions-in-n
- https://github.com/windmill-labs/windmill/pull/9194
FAQ
What is CVE-2026-47107?
CVE-2026-47107 is a vulnerability with a CVSS score of 8.1 (HIGH). Windmill prior to 1.703.2 contains an incorrect default permissions vulnerability in nsjail sandbox configuration files where /etc is bind-mounted without read-write restrictions, allowing authenticat...
How severe is CVE-2026-47107?
CVE-2026-47107 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-47107?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.