Description
Budibase is an open-source low-code platform. Prior to version 3.33.4, the plugin file upload endpoint (POST /api/plugin/upload) passes the user-supplied filename directly to createTempFolder() without sanitizing path traversal sequences. An attacker with Global Builder privileges can craft a multipart upload with a filename containing ../ to delete arbitrary directories via rmSync and write arbitrary files via tarball extraction to any filesystem path the Node.js process can access. This issue has been patched in version 3.33.4.
Affected products
budibase: budibase
References5
- github.com/Budibase/budibase/security/advisories/GHSA-2wfh-rcwf… ExploitMitigationVendor Advisory
- github.com/Budibase/budibase/security/advisories/GHSA-2wfh-rcwf… ExploitMitigationVendor Advisory
- github.com/Budibase/budibase/commit/6344d06d703660fd05995e61d58… Patch
- github.com/Budibase/budibase/pull/18240 Issue TrackingPatch
- github.com/Budibase/budibase/releases/tag/3.33.4 ProductRelease Notes
Metrics
- CVSS 3.1
-
8.7
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H - EPSS — exploit probability
- 1% percentile: 47 · as of 12 November 2026
- CWE
- CWE-22
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.