What is the CVSS score of CVE-2026-26964?

CVE-2026-26964 has a CVSS 3.1 base score of 2.7 (Low). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of Windmill are affected by CVE-2026-26964?

CVE-2026-26964 is a low-severity vulnerability in Windmill involving information exposure (CVSS 2.7).

How to fix or mitigate CVE-2026-26964?

During next maintenance window: Apply vendor patches when convenient. Verify information disclosure controls are in place.

Windmill CVE-2026-26964

LOW

Information Exposure (CWE-200)

2026-02-20 security-advisories@github.com

Information Disclosure Windmill

2.7

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

2.7 LOW

AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:04 vuln.today

CVE Published

Feb 20, 2026 - 00:16 nvd

LOW 2.7

DescriptionGitHub Advisory

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.

AnalysisAI

Technical ContextAI

Classified as CWE-200 (Information Exposure). 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 wor