# CVE-2023-39410: Apache Avro Java SDK vulnerable to Improper Input Validation

Source: https://junglewise.ai/threats/cve-2023-39410-pysec-2023-188-when-deserializing-untrusted-or-corrupted-data-it  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-09-29  
License: CC BY 4.0 with a link back

CVE-2023-39410 · Severity: low · CVSS 3.1 · Published 2023-09-29

Apache Avro Java SDK vulnerable to Improper Input Validation

Technologies: [avro (PyPI)](https://junglewise.ai/threats/technologies/pypi-avro). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven), [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2023-39410 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-39410 being exploited in the wild.

**How severe is CVE-2023-39410?** Low severity, with a CVSS score of 3.1, published 29 September 2023.

**Which products and versions are affected?** org.apache.avro:avro (Maven) ECOSYSTEM:introduced=0,fixed=1.11.3; avro (PyPI) ECOSYSTEM:introduced=0,fixed=1.11.3.

**Is there a fix for CVE-2023-39410?** Yes. org.apache.avro:avro (Maven): upgrade to 1.11.3 or later; avro (PyPI): upgrade to 1.11.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2023-39410?** Check whether you run org.apache.avro:avro (Maven) or avro (PyPI) 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.avro:avro (Maven): upgrade to 1.11.3 or later

  ```sh
  # set org.apache.avro:avro to 1.11.3 in your pom.xml or build.gradle
  ```

- avro (PyPI): upgrade to 1.11.3 or later

  ```sh
  pip install "avro>=1.11.3"
  ```


## Affected products

- org.apache.avro:avro (Maven) ECOSYSTEM:introduced=0,fixed=1.11.3
- avro (PyPI) ECOSYSTEM:introduced=0,fixed=1.11.3

## Identifiers

- CVE-2023-39410
- GHSA-rhrv-645h-fjfh
- PYSEC-2023-188

## Related threats

- [Apache Avro Java SDK code injection in avro-compiler](https://junglewise.ai/threats/cve-2025-33042-apache-avro-java-sdk-code-injection-in-avro-compiler)
- [Apache Avro Java SDK: Arbitrary Code Execution when reading Avro Data (Java SDK)](https://junglewise.ai/threats/cve-2024-47561-apache-avro-java-sdk-arbitrary-code-execution-when-reading-avro)
- [Apache Avro Rust SDK resource exhaustion in Reader](https://junglewise.ai/threats/cve-2022-36124-apache-avro-rust-sdk-resource-exhaustion-in-reader)