CVE-2025-33042: Apache Avro Java SDK: Code injection on Java generated code

Published Feb 12, 2026
·
Updated

Improper Control of Generation of Code ('Code Injection') vulnerability in Apache Avro Java SDK when generating specific records from untrusted Avro schemas.

This issue affects Apache Avro Java SDK: all versions through 1.11.4 and version 1.12.0.

Users are recommended to upgrade to version 1.12.1 or 1.11.5, which fix the issue.

Affected Software

8 affected componentsFixes available
Apache Avro Java SDK<1.11.4
maven/org.apache.avro:avro<1.11.5
1.11.5
maven/org.apache.avro:avro=1.12.0
1.12.1
Apache Avro<1.11.5
Apache Avro=1.12.0
Apache Avro=1.12.0-rc0
Apache Avro=1.12.0-rc1
IBM watsonx.data intelligence<=5.2.2, 5.3.0, 5.3.1, 5.3.1-patch-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade maven/org.apache.avro:avro to a version that resolves this vulnerability.

    Fixed in 1.11.5
  2. Upgrade

    Upgrade maven/org.apache.avro:avro to a version that resolves this vulnerability.

    Fixed in 1.12.1
  3. Upgrade

    Upgrade Apache Avro Java SDK to a version that resolves this vulnerability.

    Fixed in 1.12.1
  4. Upgrade

    Upgrade Apache Avro Java SDK to a version that resolves this vulnerability.

    Fixed in 1.11.5

Event History

Feb 13, 2026
CVE Published
via MITRE·11:47 AM
Data Sourced
via MITRE·11:47 AM
DescriptionWeakness
Data Sourced
via NVD·12:16 PM
DescriptionSeverityWeaknessAffected Software
Advisory Published
via GitHub·12:31 PM
Data Sourced
via GitHub·12:31 PM
DescriptionWeaknessAffected Software
Jun 24, 2026
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2025-33042?

CVE-2025-33042 is classified as a critical vulnerability due to its potential for code injection in Apache Avro Java SDK.

2

How do I fix CVE-2025-33042?

To resolve CVE-2025-33042, upgrade to Apache Avro Java SDK version 1.11.5 or later.

3

Which versions of Apache Avro Java SDK are affected by CVE-2025-33042?

CVE-2025-33042 affects all versions of Apache Avro Java SDK up to and including 1.11.4.

4

What type of vulnerability is CVE-2025-33042?

CVE-2025-33042 is a code injection vulnerability that occurs due to improper control over the generation of code.

5

Who is impacted by CVE-2025-33042?

Anyone using the affected versions of Apache Avro Java SDK for generating records from untrusted Avro schemas is impacted by CVE-2025-33042.

Company

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Contact

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