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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/Budibase/budibase/commit/6344d06d703660fd05995e61d581593c234…
security-advisories@github.com
https://github.com/Budibase/budibase/pull/18240
security-advisories@github.com
https://github.com/Budibase/budibase/releases/tag/3.33.4
security-advisories@github.com
https://github.com/Budibase/budibase/security/advisories/GHSA-2wfh-rcwf-wh23
security-advisories@github.com