Path Traversal in Thingsgateway
CVE-2026-4233
A vulnerability was identified in ThingsGateway 12. This affects an unknown part of the file /api/file/download. The manipulation of the argument fileName leads to path traversal. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (42.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.002
Affected products
- Thingsgateway — versions 12
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- github.com/SourByte05/SourByte-Lab/issues/11 (issue-tracking, exploit)
Frequently asked questions
- What is CVE-2026-4233?
- CVE-2026-4233 is a medium-severity vulnerability in Thingsgateway, classified under Path Traversal. CVSS score: 4.3/10. Published 2026-03-16.
- How severe is CVE-2026-4233?
- Medium severity. CVSS v3 base score is 4.3 out of 10.