CVE-2026-35214

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.

References

• https://github.com/Budibase/budibase/commit/6344d06d703660fd05995e61d581593c2349c879
• https://github.com/Budibase/budibase/pull/18240
• https://github.com/Budibase/budibase/releases/tag/3.33.4
• https://github.com/Budibase/budibase/security/advisories/GHSA-2wfh-rcwf-wh23
• https://github.com/Budibase/budibase/security/advisories/GHSA-2wfh-rcwf-wh23