CVE-2026-72850
CriticalCVSS 9.1Summary
Budibase before 3.40.0 fails to properly sanitize S3 object keys, allowing authenticated builders to upload files with traversal sequences that are preserved during export. Attackers can craft filenames containing .. segments that escape the temporary directory during workspace export, writing arbitrary content to any path writable by the Budibase process.
Risk Assessment
An attacker can write arbitrary files on the system, potentially leading to system integrity compromise or malicious code execution.
Recommendation
Upgrade Budibase to version 3.40.0, which contains the fix.
Original NVD description (English source)
Budibase before 3.40.0 fails to properly sanitize S3 object keys, allowing authenticated builders to upload files with traversal sequences that are preserved during export. Attackers can craft filenames containing .. segments that escape the temporary directory during workspace export, writing arbitrary content to any path writable by the Budibase process.