Vulnerability in the Oracle Java SE, Oracle JavaFX, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: ImageIO). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; Oracle JavaFX: 21.0.12, 25.0.4, 27; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle JavaFX, 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 JavaFX, 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).

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Oracle
  • Graalvm
  • Graalvm For Jdk
  • Java Se
  • Javafx
  • Oracle Java Se

No data.

No data.

References
Link Providers
https://nvd.nist.gov/vuln/detail/CVE-2026-91418 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-91418 cve-icon
https://www.oracle.com/security-alerts/cpuoct2026.html cve-icon cve-icon cve-icon
History

Fri, 23 Oct 2026 00:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 22 Oct 2026 14:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-770

Thu, 22 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Title Java SE ImageIO Partial Denial of Service via Malicious Network Input openjdk: Enhance GIF loading (Oracle CPU 2026-10)
Weaknesses CWE-835
References
Metrics threat_severity

None

 threat_severity

Moderate

Wed, 21 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Oracle oracle Java Se
Vendors & Products Oracle oracle Java Se

Wed, 21 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Title Java SE ImageIO Partial Denial of Service via Malicious Network Input
Weaknesses CWE-770

Tue, 20 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Description Vulnerability in the Oracle Java SE, Oracle JavaFX, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: ImageIO). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; Oracle JavaFX: 21.0.12, 25.0.4, 27; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle JavaFX, 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 JavaFX, 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
Oracle javafx
CPEs cpe:2.3:a:oracle:graalvm:21.3.19.1.1:*:*:*:enterprise:*:*:*
cpe:2.3:a:oracle:graalvm_for_jdk:17.0.20.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:graalvm_for_jdk:21.0.12.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:11.0.32.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:17.0.20.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:21.0.12.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:25.0.4.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:27:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:8u503:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:8u503:*:*:*:enterprise_performance:*:*:*
cpe:2.3:a:oracle:javafx:21.0.12:*:*:*:*:*:*:*
cpe:2.3:a:oracle:javafx:25.0.4:*:*:*:*:*:*:*
cpe:2.3:a:oracle:javafx:27:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle graalvm
Oracle graalvm For Jdk
Oracle java Se
Oracle javafx
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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published: 2026-10-20T21:25:51.705Z

Updated: 2026-10-22T18:50:23.261Z

Reserved: 2026-09-14T22:10:16.633Z

Link: CVE-2026-91418

cve-icon Vulnrichment

Updated: 2026-10-22T18:42:46.758Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:20:45.183

Modified: 2026-10-22T19:18:05.117

Link: CVE-2026-91418

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:25:51Z

Links: CVE-2026-91418 - Bugzilla