CVE-2021-23463
Improper Restriction of XML External Entity Reference in com.h2database:h2.
8.1
HIGH
CVSS 3.1
EPSS 0.77%
Description
H2 is an embeddable RDBMS written in Java. 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.
How to fix CVE-2021-23463
To remediate CVE-2021-23463, upgrade the affected package to a fixed version below.
- —upgrade to 2.0.202 or later
Is CVE-2021-23463 being exploited?
Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 1.4.198, < 2.0.202
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
References (10)
- ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-23463
- WEBgithub.com/boris-unckel/h2database/commit/f9ad6aef2bfa59eba2b4d3e7c4c32d2cce8e8b05
- WEBgithub.com/h2database/h2database
- WEBgithub.com/h2database/h2database/commit/d83285fd2e48fb075780ee95badee6f5a15ea7f8%23diff-008c2e4462609982199cd83e7cf6f1d6b41296b516783f6752c44b9f15dc7bc3