# CVE-2020-13955: Missing Authentication for Critical Function in Apache Calcite

Source: https://junglewise.ai/threats/cve-2020-13955-missing-authentication-for-critical-function-in-apache-calcite  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-04-22  
License: CC BY 4.0 with a link back

CVE-2020-13955 · Severity: low · CVSS 3.1 · Published 2021-04-22

Missing Authentication for Critical Function in Apache Calcite

Technologies: [org.apache.calcite:calcite-core (Maven)](https://junglewise.ai/threats/technologies/org-apache-calcite-calcite-core). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is CVE-2020-13955 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2020-13955 being exploited in the wild.

**How severe is CVE-2020-13955?** Low severity, with a CVSS score of 3.1, published 22 April 2021.

**Which products and versions are affected?** org.apache.calcite:calcite-core (Maven) ECOSYSTEM:introduced=0,fixed=1.26.0; org.apache.calcite:calcite-druid (Maven) ECOSYSTEM:introduced=0,fixed=1.26.0; org.apache.calcite:calcite-splunk (Maven) ECOSYSTEM:introduced=0,fixed=1.26.0.

**Is there a fix for CVE-2020-13955?** Yes. org.apache.calcite:calcite-core (Maven): upgrade to 1.26.0 or later; org.apache.calcite:calcite-druid (Maven): upgrade to 1.26.0 or later; org.apache.calcite:calcite-splunk (Maven): upgrade to 1.26.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2020-13955?** Check whether you run org.apache.calcite:calcite-core (Maven), org.apache.calcite:calcite-druid (Maven) or org.apache.calcite:calcite-splunk (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- org.apache.calcite:calcite-core (Maven): upgrade to 1.26.0 or later

  ```sh
  # set org.apache.calcite:calcite-core to 1.26.0 in your pom.xml or build.gradle
  ```

- org.apache.calcite:calcite-druid (Maven): upgrade to 1.26.0 or later

  ```sh
  # set org.apache.calcite:calcite-druid to 1.26.0 in your pom.xml or build.gradle
  ```

- org.apache.calcite:calcite-splunk (Maven): upgrade to 1.26.0 or later

  ```sh
  # set org.apache.calcite:calcite-splunk to 1.26.0 in your pom.xml or build.gradle
  ```


## Affected products

- org.apache.calcite:calcite-core (Maven) ECOSYSTEM:introduced=0,fixed=1.26.0
- org.apache.calcite:calcite-druid (Maven) ECOSYSTEM:introduced=0,fixed=1.26.0
- org.apache.calcite:calcite-splunk (Maven) ECOSYSTEM:introduced=0,fixed=1.26.0

## Identifiers

- CVE-2020-13955
- GHSA-hxp5-8pgq-mgv9

## Related threats

- [Apache Calcite unsafe reflection in user-controlled models](https://junglewise.ai/threats/cve-2026-46718-apache-calcite-unsafe-reflection-in-user-controlled-models)
- [Apache Calcite before 1.32.0 vulnerable to potential XML External Entity (XXE) attack](https://junglewise.ai/threats/cve-2022-39135-apache-calcite-before-1-32-0-vulnerable-to-potential-xml-external)