CVE-2026-47107

Windmill < 1.703.2 Incorrect Default Permissions in nsjail Configuration

HIGH
8.1
CVSS Score
Published: May 19, 2026 at 04:42 PM UTC
Updated: October 6, 2026 at 09:10 PM UTC
1 product affected across 1 vendorWindmill

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Severity
HIGH8.1
Exploit prediction
EPSS 0.3%
SSVC
PoC

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 victim workspaces across tenants.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.703.2
Affected range stops below 1.703.2, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in f8467f38c8a053117ce62f96684cfb15ef792f08 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-276

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