Path Traversal in Budibase
CVE-2026-35214
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (49.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.001
Affected products
- Budibase — versions < 3.33.4
Weakness classification (CWE)
References
- github.com/Budibase/budibase/security/advisories/GHSA-2wfh-rcwf-wh23 (Exploit, Mitigation, Vendor Advisory)
- github.com/Budibase/budibase/pull/18240 (Patch, Issue Tracking)
- github.com/Budibase/budibase/commit/6344d06d703660fd05995e61d581593c2349c879 (Patch)
- github.com/Budibase/budibase/releases/tag/3.33.4 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-35214?
- CVE-2026-35214 is a high-severity vulnerability in Budibase, classified under Path Traversal. CVSS score: 8.7/10. Published 2026-04-03.
- How severe is CVE-2026-35214?
- High severity. CVSS v3 base score is 8.7 out of 10.