CVE-2026-26964
Windmill Exposes Workspace Slack OAuth Client Secrets to Non-Admin Workspace Members
Windmill is an open-source developer platform for internal code: APIs, background jobs, workflows and UIs. Versions 1.634.6 and below allow non-admin users to obtain Slack OAuth client secrets, which should only be accessible to workspace administrators. The GET /api/w/{workspace}/workspaces/get_settings endpoint returns the slack_oauth_client_secret to any authenticated workspace member, regardless of their admin status. It is expected behavior for non-admin users see a redacted version of workspace settings, as some of them are necessary for the frontend to behave correctly even for non-admins. However, the Slack configuration should not be visible to non-admins. This is a legacy issue where the setting was stored as a plain value instead of using $variable indirection, and it was never added to the redaction logic. This issue has been fixed in version 1.635.0.
| CWE | CWE-200 |
| Vendor | windmill-labs |
| Product | windmill |
| Published | Feb 19, 2026 |
| Last Updated | Feb 20, 2026 |
Get instant alerts for windmill-labs windmill
Be the first to know when new low vulnerabilities affecting windmill-labs windmill are published — delivered to Slack, Telegram or Discord.
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N