CVE-2026-100682

High

Description

Budibase Server before 3.45.0 contains an arbitrary file write vulnerability in the PWA icon upload endpoint that extracts user-supplied ZIP archives without proper symlink validation. Attackers with BUILDER role can craft a malicious ZIP with leaf symlink entries followed by duplicate file entries to write arbitrary files as root, enabling remote code execution.

SeverityHigh

CVSS8.8

Exploit probability—

ProductBudibase Server

PublishedSep 26, 2026

First seenSep 26, 2026

Weakness typeCWE-22Path traversal

How to fix

Update

budibase server3.45.0 or later

Vendor advisories

github.com/Budibase/budibase/security/advisories/GHSA-37r6-5jxh-vm83

Affected products

Product	Affected versions	Fixed in
budibase server	v < 3.45.0	3.45.0

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