Windmill < 1.603.3 File Ownership Handling SQLi RCE
68Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendcvss 9.4epss 16%
exploitation probability
16%top 3% of all CVEs
observed exploitation
nono source reports it
2 public exploit(s)
Windmill CE and EE versions 1.276.0 through 1.603.2 contain an SQL injection vulnerability in the folder ownership management functionality that allows authenticated attackers to inject SQL through the owner parameter. An attacker can use the injection to read sensitive data such as the JWT signing secret and administrative user identifiers, forge an administrative token, and then execute arbitrary code via the workflow execution endpoints.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected products
Windmill Labs · Windmill CE (Community Edition)Windmill Labs · Windmill EE (Enterprise Edition)public PoCs found — 2
cve_referencechocapikk.com/posts/2026/windfall-nextcloud-flow-windmill-rce/unverifiedcve_referencegithub.com/Chocapikk/Windfallunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://apps.nextcloud.com/apps/flow/releaseshttps://chocapikk.com/posts/2026/windfall-nextcloud-flow-windmill-rce/https://github.com/Chocapikk/Windfallhttps://github.com/windmill-labs/windmill/commit/942fb629210ebb287f48467d1535ffde3a3eeafehttps://github.com/windmill-labs/windmill/releases/tag/v1.603.3https://www.vulncheck.com/advisories/windmill-file-ownership-handling-sqli-rcehttps://www.windmill.dev/