A high-severity security flaw impacting open-source developer platform Windmill has come under active exploitation in the wild, per VulnCheck.

The vulnerability in question is CVE-2026-29059 (CVSS score: 7.5), a case of unauthenticated path traversal impacting Windmill’s “get_log_file” endpoint (“/api/w/{workspace}/jobs_u/get_log_file/{filename}”).

“The filename parameter is concatenated into