CVE-2026-47107: high-severity vulnerability in windmill-labs windmill
Windmill < 1.703.2 Incorrect Default Permissions in nsjail Configuration
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.6epss 0.3%
exploitation probability
0.3%top 77% of all CVEs
observed exploitation
nono source reports it
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
windmill-labs · windmillRelated CVEs — windmill-labs windmill
In the same product, most dangerous first.
CVE-2026-29059MEDIUMWindmill: SUPERADMIN_SECRET (rarely used) can be accessed publiclyEPSS 2.2%CVE-2026-33881HIGHWindmill: Rogue Workspace Admins can inject code via unescaped workspace environment variable interpolation in NativeTS executorEPSS 0.6%CVE-2026-54136MEDIUMWindmill: Resource-scoped API tokens can read script contents outside their allowed path via scripts/list_searchEPSS 0.5%CVE-2026-26964LOWWindmill Exposes Workspace Slack OAuth Client Secrets to Non-Admin Workspace MembersEPSS 0.5%
References
https://github.com/windmill-labs/windmill/commit/f8467f38c8a053117ce62f96684cfb15ef792f08https://github.com/windmill-labs/windmill/pull/9194https://github.com/windmill-labs/windmill/releases/tag/v1.703.2https://www.vulncheck.com/advisories/windmill-incorrect-default-permissions-in-nsjail-configuration