CVE-2026-100682 Budibase Server before 3.45.0 Arbitrary File Write via ZIP Symlink
Attackers with BUILDER role can write arbitrary files as root via malicious ZIP symlinks, enabling remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-100682?
CVE-2026-100682 is a high-severity path traversal vulnerability in budibase server, published on 26 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2026-100682?
How do I fix CVE-2026-100682?
No fix has been published for CVE-2026-100682 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-100682 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-100682 exists.
Sources
Also known as GHSA-37r6-5jxh-vm83, GHSA-xphc-jppf-jrhm.