Remote code execution via JDBC deserialization
Published Mar 19, 2026 · Updated Mar 19, 2026
JDBC deserialization in wgcloud 2.3.7 and earlier allows remote attackers to execute arbitrary code through its database test connection. The /dbInfo/validate handler passes an attacker-controlled database name to ConnectionUtil.getJdbcTemplate(), allowing appended MySQL options to enable autoDeserialize and load a Jackson gadget from a malicious server. Exploitation requires network access to the test-connection endpoint but no authentication or user interaction, and successful execution runs code in the server process.
Summary
What happened
JDBC deserialization in wgcloud 2.3.7 and earlier allows remote attackers to execute arbitrary code through its database test connection. The /dbInfo/validate handler passes an attacker-controlled database name to ConnectionUtil.getJdbcTemplate(), allowing appended MySQL options to enable autoDeserialize and load a Jackson gadget from a malicious server. Exploitation requires network access to the test-connection endpoint but no authentication or user interaction, and successful execution runs code in the server process.
The record
- CVE
- CVE-2026-30402
- Published
- Mar 19, 2026
- Updated
- Mar 19, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-94, T1190
- 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
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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.
Weakness, pattern, technique
Public exploit references
- wgcloud JDBC deserialization proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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