# CVE-2026-22016: Oracle Java SE JAXP information disclosure

Source: https://junglewise.ai/threats/cve-2026-22016-oracle-java-se-jaxp-information-disclosure  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-21. Updated: 2026-06-30  
License: CC BY 4.0 with a link back

CVE-2026-22016 · Severity: high · CVSS 7.5 · Published 2026-04-21

A vulnerability exists in the Java XML processing component (JAXP) used by Oracle Java SE and GraalVM. This component is responsible for handling and parsing XML data within applications and web services. An attacker could exploit this flaw to gain unauthorized access to sensitive data or critical system information, potentially compromising the confidentiality of the entire environment.

Technologies: [Oracle GraalVM Enterprise Edition](https://junglewise.ai/threats/technologies/graalvm-enterprise-edition), [Oracle Graalvm For Jdk](https://junglewise.ai/threats/technologies/graalvm-for-jdk), [Oracle Java SE](https://junglewise.ai/threats/technologies/java-se). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-22016 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-22016 being exploited in the wild.

**How severe is CVE-2026-22016?** High severity, with a CVSS score of 7.5, published 21 April 2026.

**Which products and versions are affected?** Oracle GraalVM Enterprise Edition 21.3.17; Oracle Graalvm For Jdk 17.0.18, 21.0.10; Oracle Java SE 8u481, 11.0.30, 17.0.18, 21.0.10, 25.0.2, 26.

**Is there a fix for CVE-2026-22016?** A patch was published on 2026-04-28: Red Hat released updates for hardened images and OpenJDK builds Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-22016 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-22016?** Check whether you run Oracle GraalVM Enterprise Edition, Oracle Graalvm For Jdk or Oracle Java SE 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.

## Technical details

This vulnerability is located in the Java API for XML Processing (JAXP) component of Oracle Java SE and GraalVM. It is classified as an information disclosure flaw (CWE-200), with related indicators suggesting improper restriction of XML external entity references (XXE) or deserialization issues. An unauthenticated attacker can exploit this over a network via multiple protocols by providing malicious data to APIs that utilize the JAXP component, such as web services. The vulnerability also impacts sandboxed Java deployments (Web Start/applets) that run untrusted code. Successful exploitation results in a high confidentiality impact, allowing access to all data reachable by the Java process. Patches are available through Oracle's April 2026 Critical Patch Update and subsequent Red Hat OpenJDK updates (e.g., OpenJDK 25.0.3).

## Affected products

- Oracle Java SE 8u481, 11.0.30, 17.0.18, 21.0.10, 25.0.2, 26
- Oracle GraalVM for JDK 17.0.18, 21.0.10
- Oracle GraalVM Enterprise Edition 21.3.17
- Red Hat OpenJDK 11, 21, 25.0.2

## Timeline

- 2026-04-21: advisory: Initial Oracle advisory published
- 2026-04-28: patched: Red Hat released updates for hardened images and OpenJDK builds

## References

- [https://www.oracle.com/security-alerts/cpuapr2026.html](https://www.oracle.com/security-alerts/cpuapr2026.html)
- [https://access.redhat.com/errata/RHSA-2026:11403](https://access.redhat.com/errata/RHSA-2026:11403)
- [https://access.redhat.com/errata/RHSA-2026:11655](https://access.redhat.com/errata/RHSA-2026:11655)
- [https://access.redhat.com/errata/RHSA-2026:11822](https://access.redhat.com/errata/RHSA-2026:11822)
- [https://access.redhat.com/errata/RHSA-2026:11829](https://access.redhat.com/errata/RHSA-2026:11829)
- [https://access.redhat.com/errata/RHSA-2026:11902](https://access.redhat.com/errata/RHSA-2026:11902)
- [https://access.redhat.com/errata/RHSA-2026:22139](https://access.redhat.com/errata/RHSA-2026:22139)

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