Description
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: 2D). Supported versions that are affected are Oracle Java SE: 8u491, 8u491-perf, 11.0.31, 17.0.19, 21.0.11, 25.0.3, 26.0.1; Oracle GraalVM for JDK: 17.0.19 and 21.0.11; Oracle GraalVM Enterprise Edition: 21.3.18. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).
Published: 2026-07-21
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability resides in the 2D image handling of Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. An unauthenticated attacker that can send specially crafted XBM image data through any network‑facing protocol can trigger a crash or resource exhaustion, resulting in a partial denial of service. The weakness is identified as CWE‑1333 (Imbalanced Resource Allocation) and CWE‑400 (Uncontrolled Resource Consumption).

Affected Systems

Affected deployments include Oracle Java SE versions 8u491 (including the 8u491‑perf variant), 11.0.31, 17.0.19, 21.0.11, 25.0.3 and 26.0.1; Oracle GraalVM for JDK versions 17.0.19 and 21.0.11; and Oracle GraalVM Enterprise Edition 21.3.18. Any installation that exposes APIs which accept XBM image data—such as web services, Java Web Start, or sandboxed applets—is at risk when running these versions.

Risk and Exploitability

The CVSS v3.1 base score of 5.3 signals a low‑to‑moderate availability impact. The EPSS score is below 1 %, indicating a low likelihood of exploitation at this time, and the vulnerability is not listed in CISA’s KEV catalog. Attackers can exploit the flaw remotely without authentication by transmitting malicious XBM image data via any network fronting the vulnerable Java API or web service. Based on the description, it is inferred that the primary attack vector is delivery of crafted XBM image data through a network‑facing Java API, such as a web service, Java Web Start or sandboxed applet that accepts image input. A successful exploit simply functions to crash or hang the Java runtime, resulting in a partial service interruption.

Generated by OpenCVE AI on August 4, 2026 at 05:09 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the Oracle patch that fixes the XBM image parsing issue for all affected Java SE and GraalVM releases.
  • If patching cannot be performed immediately, disable XBM support or configure the 2D component to reject external image data from untrusted sources.
  • Restrict network exposure of Java APIs that consume external image data and enforce sandbox controls for sandboxed Java Web Start applications and applets.

Generated by OpenCVE AI on August 4, 2026 at 05:09 UTC.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-4702-1 openjdk-11 security update
Debian DLA Debian DLA DLA-4703-1 openjdk-17 security update
Debian DSA Debian DSA DSA-6425-1 openjdk-21 security update
History

Thu, 23 Jul 2026 21:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 23 Jul 2026 05:15:00 +0000

Type Values Removed Values Added
First Time appeared Oracle graalvm Enterprise Edition
Vendors & Products Oracle graalvm Enterprise Edition

Wed, 22 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
Title openjdk: OpenJDK: Enhance XBM image support (Oracle CPU 2026-07)
Weaknesses CWE-1333
References
Metrics threat_severity

None

 threat_severity

Moderate

Tue, 21 Jul 2026 21:45:00 +0000

Type Values Removed Values Added
Description Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: 2D). Supported versions that are affected are Oracle Java SE: 8u491, 8u491-perf, 11.0.31, 17.0.19, 21.0.11, 25.0.3, 26.0.1; Oracle GraalVM for JDK: 17.0.19 and 21.0.11; Oracle GraalVM Enterprise Edition: 21.3.18. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).
First Time appeared Oracle
Oracle graalvm
Oracle graalvm For Jdk
Oracle java Se
CPEs cpe:2.3:a:oracle:graalvm:21.3.18:*:*:*:enterprise:*:*:*
cpe:2.3:a:oracle:graalvm_for_jdk:17.0.19:*:*:*:*:*:*:*
cpe:2.3:a:oracle:graalvm_for_jdk:21.0.11:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:11.0.31:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:17.0.19:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:21.0.11:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:25.0.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:26.0.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:8u491:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:8u491:*:*:*:enterprise_performance:*:*:*
Vendors & Products Oracle
Oracle graalvm
Oracle graalvm For Jdk
Oracle java Se
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

Subscriptions

Oracle Graalvm Graalvm Enterprise Edition Graalvm For Jdk Java Se
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-07-23T15:22:07.794Z

Reserved: 2026-05-18T15:55:10.317Z

Link: CVE-2026-47021

cve-icon Vulnrichment

Updated: 2026-07-23T15:21:52.453Z

cve-icon NVD

No data.

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-07-21T20:00:00Z

Links: CVE-2026-47021 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-04T05:15:03Z

Weaknesses
  • CWE-1333

    Inefficient Regular Expression Complexity

  • CWE-400

    Uncontrolled Resource Consumption