Description
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.
Published: 2026-08-13
Score: 9.4 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 13 Aug 2026 22:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Budibase before 3.40.0 Arbitrary File Write via Path Traversal
First Time appeared Budibase
Budibase budibase
Weaknesses CWE-22
CPEs cpe:2.3:a:budibase:budibase:*:*:*:*:*:*:*:*
Vendors & Products Budibase
Budibase budibase
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.4, 'vector': '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'}


Subscriptions

Budibase Budibase
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-13T21:54:42.651Z

Reserved: 2026-08-10T15:14:51.468Z

Link: CVE-2026-72850

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-13T22:17:24.307

Modified: 2026-08-13T22:17:24.307

Link: CVE-2026-72850

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-14T00:45:17Z

Weaknesses