CVE-2026-72850: Budibase before 3.40.0 Arbitrary File Write via Path Traversal
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-72850?
CVE-2026-72850 has a critical severity rating of 9.1.
How do I fix CVE-2026-72850?
To fix CVE-2026-72850, upgrade Budibase to version 3.40.0 or later.
What causes CVE-2026-72850?
CVE-2026-72850 is caused by Budibase failing to properly sanitize S3 object keys, allowing path traversal.
Who is affected by CVE-2026-72850?
Authenticated builders using Budibase versions prior to 3.40.0 are affected by CVE-2026-72850.
What impact does CVE-2026-72850 have?
CVE-2026-72850 allows attackers to perform arbitrary file write operations by exploiting path traversal.