CVE-2026-100682: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in budibase server
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.
AI Analysis
Technical Summary
Budibase Server versions prior to 3.45.0 have an arbitrary file write vulnerability in the PWA icon upload endpoint. The vulnerability arises because the server extracts user-supplied ZIP archives without validating symbolic links properly. An attacker with BUILDER role permissions can create a malicious ZIP archive containing leaf symlink entries followed by duplicate file entries. This allows the attacker to write arbitrary files with root privileges, enabling remote code execution on the server.
Potential Impact
Successful exploitation allows an attacker with BUILDER role privileges to write arbitrary files as root on the server, leading to remote code execution. This compromises the confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
A fix is available in Budibase Server version 3.45.0. Users should upgrade to version 3.45.0 or later to remediate this vulnerability. No other mitigation guidance is provided in the input data.
CVE-2026-100682: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in budibase server
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.
CVSS v4.0
Score 8.7high
Affected software
budibase
server
pkg:github/budibase/budibaseRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Budibase Server versions prior to 3.45.0 have an arbitrary file write vulnerability in the PWA icon upload endpoint. The vulnerability arises because the server extracts user-supplied ZIP archives without validating symbolic links properly. An attacker with BUILDER role permissions can create a malicious ZIP archive containing leaf symlink entries followed by duplicate file entries. This allows the attacker to write arbitrary files with root privileges, enabling remote code execution on the server.
Potential Impact
Successful exploitation allows an attacker with BUILDER role privileges to write arbitrary files as root on the server, leading to remote code execution. This compromises the confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
A fix is available in Budibase Server version 3.45.0. Users should upgrade to version 3.45.0 or later to remediate this vulnerability. No other mitigation guidance is provided in the input data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-26T02:36:51.810Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab7c9abf7a7c5410652fd4d
Added to database: 09/26/2026, 13:33:31 UTC
Last enriched: 09/26/2026, 13:48:39 UTC
Last updated: 09/27/2026, 04:31:25 UTC
Views: 13
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.