Junglewise Threat Intelligence

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

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

Technologies: Oracle Java SE, Oracle GraalVM Enterprise Edition, Oracle Graalvm For Jdk. Vendors: Oracle, Red Hat.

Executive brief

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.

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

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