CVE-2026-23696Public exploitNetwork attack vector

Authenticated remote code execution via owner SQL injection

Published Apr 7, 2026 · Updated Apr 7, 2026

SQL injection in Windmill CE and EE 1.276.0 through 1.603.2 allows remote authenticated users to execute arbitrary code. The add_owner handler formats the owner value directly into a jsonb_set path in an UPDATE statement, allowing subqueries to place database secrets in readable folder permissions. Any authenticated user can create and own a folder; leaked JWT secrets and administrator identifiers enable token forgery and workflow code execution, and Flow 1.0.0 through 1.2.2 embeds the affected server.

CVSS severity9.4
Critical
EPSS probability13.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in Windmill CE and EE 1.276.0 through 1.603.2 allows remote authenticated users to execute arbitrary code. The add_owner handler formats the owner value directly into a jsonb_set path in an UPDATE statement, allowing subqueries to place database secrets in readable folder permissions. Any authenticated user can create and own a folder; leaked JWT secrets and administrator identifiers enable token forgery and workflow code execution, and Flow 1.0.0 through 1.2.2 embeds the affected server.

The record

CVE
CVE-2026-23696
Published
Apr 7, 2026
Updated
Apr 7, 2026
Vendor
Nextcloud GmbH
Product
Flow
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0 <=1.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Nextcloud GmbH · Flowversion=1.0.0 <=1.2.2
Windmill Labs · Windmill Community Editionversion=1.276.0 <=1.603.2
Windmill Labs · Windmill Enterprise Editionversion=1.276.0 <=1.603.2

Published CVSS scores

9.4VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
9.9VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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