What is CVE-2026-100682?

CVE-2026-100682 is a high-severity vulnerability in Budibase Server, classified under Path Traversal. CVSS score: 8.8/10. Published 2026-09-26.

How severe is CVE-2026-100682?

High severity. CVSS v3 base score is 8.8 out of 10.

Path Traversal in Budibase Server

CVE-2026-100682

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.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2026-09-26.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Budibase Server

Weakness classification (CWE)

CWE-22 — Path Traversal

References

github.com/Budibase/budibase/security/advisories/GHSA-37r6-5jxh-vm83 (vendor-advisory)
www.vulncheck.com/advisories/budibase-server-before-3.45.0-arbitrary-file-write… (third-party-advisory)

Frequently asked questions

What is CVE-2026-100682?: CVE-2026-100682 is a high-severity vulnerability in Budibase Server, classified under Path Traversal. CVSS score: 8.8/10. Published 2026-09-26.
How severe is CVE-2026-100682?: High severity. CVSS v3 base score is 8.8 out of 10.