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Apache Calcite is Vulnerable to Use of Externally-Controlled Input to Select Classes

Moderate severity GitHub Reviewed Published Jun 2, 2026 to the GitHub Advisory Database • Updated Jul 9, 2026

Package

maven org.apache.calcite:calcite-core (Maven)

Affected versions

>= 1.5.0, < 1.42.0

Patched versions

1.42.0

Description

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache Calcite.

This issue affects Apache Calcite: from 1.5.0 before 1.42.

Users are recommended to upgrade to version 1.42, which fixes the issue.

References

Published by the National Vulnerability Database Jun 2, 2026
Published to the GitHub Advisory Database Jun 2, 2026
Reviewed Jul 9, 2026
Last updated Jul 9, 2026

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(35th percentile)

Weaknesses

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

The product uses external input with reflection to select which classes or code to use, but it does not sufficiently prevent the input from selecting improper classes or code. Learn more on MITRE.

CVE ID

CVE-2026-46718

GHSA ID

GHSA-c2rv-hwqm-wjpg

Source code

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