CVE-2021-23463
8.1 · HIGHOverview
CVE-2021-23463 is a high-severity vulnerability affecting h2database h2. It was published on December 10, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
The package com.h2database:h2 from 1.4.198 and before 2.0.202 are vulnerable to XML External Entity (XXE) Injection via the org.h2.jdbc.JdbcSQLXML class object, when it receives parsed string data from org.h2.jdbc.JdbcResultSet.getSQLXML() method. If it executes the getSource() method when the parameter is DOMSource.class it will trigger the vulnerability.
Remediation
Check the references section for vendor advisories and patches from h2database. Update h2 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| h2database | h2 | >= 1.4.198, < 2.0.202 | Affected |
References
Frequently Asked Questions
What is CVE-2021-23463?
CVE-2021-23463 is a high-severity vulnerability affecting h2database h2. It was published on December 10, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2021-23463?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-23463?
Check the references section for vendor advisories and patches from h2database. Update h2 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-23463?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-23463 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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