What is CVE-2026-30403?

CVE-2026-30403 is a high-severity vulnerability in Wgstart Wgcloud, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-03-19.

How severe is CVE-2026-30403?

High severity. CVSS v3 base score is 7.5 out of 10.

Path Traversal in Wgstart Wgcloud

CVE-2026-30403

There is an arbitrary file read vulnerability in the test connection function of backend database management in wgcloud v3.6.3 and before, which can be used to read any file on the victim's server.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2026-03-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.005 (41.9th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.9% 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: +0.001

Affected products

Wgstart Wgcloud

Weakness classification (CWE)

CWE-22 — Path Traversal

References

github.com/tianshiyeben/wgcloud/issues/97 (Issue Tracking)
github.com/TTTlw1024/qwe/issues/2 (Exploit, Issue Tracking)

Frequently asked questions

What is CVE-2026-30403?: CVE-2026-30403 is a high-severity vulnerability in Wgstart Wgcloud, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-03-19.
How severe is CVE-2026-30403?: High severity. CVSS v3 base score is 7.5 out of 10.