CVE-2026-100682: Budibase Server

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Budibase Server: before 3.45.0 (fixed in 3.45.0)

Published 2026-09-26. Last modified 2026-10-08.