CVE-2026-72850CWE-22path-traversal

CVE-2026-72850

Critical · published August 14, 2026

CVSS v3.1

9.1

EPSS

Percentile

43.2

In the wild

Unconfirmed

What it is

Budibase before 3.40.0 fails to properly sanitize S3 object keys, allowing authenticated builders to upload files with traversal sequences that are preserved during export. Attackers can craft filenames containing .. segments that escape the temporary directory during workspace export, writing arbitrary content to any path writable by the Budibase process.

The record

Technical detail

CVSS v3.1: 9.1 · CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0: 9.4 · CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
EPSS: 0.00518 · 43.2th percentile
Weakness: CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published: 2026-08-14T02:17Z

References (3)

https://github.com/Budibase/budibase/security/advisories/GHSA-pxwc-66g3-5f27 · [email protected]https://www.vulncheck.com/advisories/budibase-before-arbitrary-file-write-via-path-traversal · [email protected]https://github.com/Budibase/budibase/security/advisories/GHSA-pxwc-66g3-5f27 · 134c704f-9b21-4f2e-91b3-4a467353bcc0

EPSS history

Timeline

13 AUG 21:54Z
Budibase before 3.40.0 Arbitrary File Write via Path Traversal
cvelistv5