Unauthenticated internal network probing via connection test
Published Mar 19, 2026 · Updated Mar 19, 2026
SSRF in wgcloud 3.6.3 allows remote attackers to make the server issue requests through its database connection test endpoint. The /dbInfo/validate endpoint accepts an attacker-controlled MySQL JDBC destination and permissive LOCAL INFILE URL options, then performs the backend connection test without restricting the resulting outbound request. Unauthenticated network access is sufficient; the demonstrated effect is internal-network probing and retrieval of remote content through the server.
Summary
What happened
SSRF in wgcloud 3.6.3 allows remote attackers to make the server issue requests through its database connection test endpoint. The /dbInfo/validate endpoint accepts an attacker-controlled MySQL JDBC destination and permissive LOCAL INFILE URL options, then performs the backend connection test without restricting the resulting outbound request. Unauthenticated network access is sufficient; the demonstrated effect is internal-network probing and retrieval of remote content through the server.
The record
- CVE
- CVE-2026-30404
- Published
- Mar 19, 2026
- Updated
- Mar 19, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-918, T1046
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 19, 2026CVE publishedPublication date reported by the CVE source.
- Mar 19, 2026Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
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Published CVSS scores
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Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- Database connection test SSRF proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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