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: < 1% Very Low
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

Fri, 14 Aug 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 14 Aug 2026 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Budibase server
Vendors & Products Budibase server

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 Server
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-14T16:14:04.242Z

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

Link: CVE-2026-72850

cve-icon Vulnrichment

Updated: 2026-08-14T16:13:57.910Z

cve-icon NVD

Status : Received

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

Modified: 2026-08-14T17:20:31.517

Link: CVE-2026-72850

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-14T09:30:13Z

Weaknesses