Vulnerability · Published Apr 3, 2026 · Assigned by GitHub_M

CVE-2026-35214Budibase: Path traversal in plugin file upload enables arbitrary directory deletion and file write

High 8.7

In plain English

A high-severity path traversal in budibase from Budibase. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.7High

Exploit odds (30 days)0.6%top 53.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	@budibase/server	3.33.4	GHSA-2wfh-rcwf-wh23

Affected products (as reported)

Vendor	Product	Versions
Budibase	budibase	< 3.33.4

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H

References

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