CVE-2026-100682
Budibase Server before 3.45.0 Arbitrary File Write via ZIP Symlink
- State
- Published
- Severity
- 8.7 High
- Published
- Sep 26, 2026
- Updated
- Oct 8, 2026
- Reserved
- Sep 26, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products
| Product | Versions |
|---|---|
serverbudibase |
|
References
- GitHub Security Advisory (GHSA-37r6-5jxh-vm83)vendor-advisory
- VulnCheck Advisory: Budibase Server before 3.45.0 Arbitrary File Write via ZIP Symlinkthird-party-advisory
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