CVE-2026-100682 Budibase Server - Unrestricted File Upload

Budibase Server < 3.45.0 contains an arbitrary file write vulnerability caused by improper symlink validation in the PWA icon upload endpoint, letting attackers with BUILDER role write arbitrary files as root, enabling remote code execution.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.57% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Unrestricted File Upload
Impact
Remote Code Execution, File System Write
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
26 September 2026
Updated
15 October 2026
Weakness
CWE-22

Vendor fix

Upgrade to version 3.45.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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