Is CVE-2021-23463 in the CISA KEV catalog?

No. CVE-2021-23463 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-23463?

CVE-2021-23463 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2021-23463?

CVE-2021-23463 has an EPSS score of 3.28% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-23463?

Upgrade h2 to 2.0.202 or later.

CVE & CISA-KEV Catalog

CVE-2021-23463

HIGHEPSS 87th pctl

8.1

CVSS v3

NVD

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.

CWE-611XML External Entity (XXE)

How to fix

Remediation Available

h2NVD

Affected:>= 1.4.198, < 2.0.202Fixed in:2.0.202CVE-2021-23463derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Exploit Intelligence

3.28%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Patch3

Other references3

Related Vulnerabilities

Other CWE-611 (XML External Entity (XXE)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-34102	Critical	9.8	100%	KEV	Fix
CVE-2019-9670	Critical	9.8	100%	KEV	Fix
CVE-2022-28219	Critical	9.8	97%	-	-
CVE-2024-22024	High	8.3	95%	-	-
CVE-2024-38653	High	7.5	92%	-	-
CVE-2017-12629	Critical	9.8	92%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.