CVE-2026-72850

critical · 9.4

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.

9.4

CVSS

0.6%

EPSS (exploit prob.)

47th

EPSS percentile

2026-08-13

Published

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-22

References

https://github.com/Budibase/budibase/security/advisories/GHSA-pxwc-66g3-5f27
https://www.vulncheck.com/advisories/budibase-before-arbitrary-file-write-via-path-traversal
https://github.com/Budibase/budibase/security/advisories/GHSA-pxwc-66g3-5f27

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-72850