What is the CVSS score of EUVD-2026-46549?

EUVD-2026-46549 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 0.3%.

Which versions of Oracle Java SE are affected by EUVD-2026-46549?

Oracle Java SE, GraalVM for JDK, and GraalVM Enterprise Edition contain a data modification vulnerability (CVE-2026-47063) allowing remote, unauthenticated attackers to corrupt, create, or delete…. A patch is available.

How to fix or mitigate EUVD-2026-46549?

Within 24 hours, conduct a complete inventory of all systems and applications running Oracle Java SE, GraalVM for JDK, or GraalVM Enterprise Edition, documenting which applications process untrusted external input through affected library APIs. Within 7 days, implement application-layer input validation and sanitization controls on all identified systems, restrict network access to Java services to trusted sources only via firewalls and security groups, and contact Oracle for interim guidance; evaluate migration to updated GraalVM Community Edition versions as an alternative if available. Within 30 days, establish a formal remediation plan prioritizing critical applications that process sensitive data or face internet exposure, and execute vendor-released patches immediately upon availability.

Oracle Java SE EUVD-2026-46549

| CVE-2026-47063 HIGH

Improper Access Control (CWE-284)

2026-07-21 oracle

GHSA-vw39-pj36-hc59

Authentication Bypass Java Oracle Oracle Java Se Oracle Graalvm Enterprise Edition Oracle Graalvm For Jdk Oracle Corporation

7.5

CVSS 3.1 · Vendor: oracle

Severity by source

Vendor (oracle) PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

vuln.today AI

7.5 HIGH

Oracle describes easy unauthenticated network exploitation via APIs (AV:N/AC:L/PR:N/UI:N) with impact limited to data integrity, so C:N/I:H/A:N and scope unchanged.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

SUSE

HIGH

qualitative

Red Hat

7.5 HIGH

qualitative

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Generated

Jul 21, 2026 - 23:14 vuln.today

CVE Published

Jul 21, 2026 - 21:33 nvd

HIGH 7.5

DescriptionCVE.org

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Libraries). 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 creation, deletion or modification access to critical data or all Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. 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 7.5 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).

Articles & Coverage 1

News 6 New Java Vulnerabilities - 1 Critical, 5 High Severity Jul 22, 2026

AnalysisAI

Unauthorized data modification in Oracle Java SE, GraalVM for JDK, and GraalVM Enterprise Edition (Libraries component) lets a remote, unauthenticated attacker corrupt, create, or delete critical data by feeding crafted input to affected Java APIs, for example through a web service that passes data to those APIs. It carries CVSS 3.1 7.5 with an integrity-only impact (C:N/I:H/A:N) and is described by Oracle as easily exploitable over multiple network protocols. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but the ubiquity of the Java runtime makes patching a priority.

Technical ContextAI

The flaw resides in the core Libraries component shared across the Oracle JDK/JRE, GraalVM for JDK, and GraalVM Enterprise Edition - the foundational class libraries (java.*, sun.* utilities for parsing, serialization, or data handling) that virtually every Java application links against. Because the defect is in the runtime libraries rather than a single application, any process that routes untrusted input into the affected APIs is exposed; Oracle explicitly notes exploitation via APIs such as a web service supplying data. Oracle assigned no CWE (CWE: N/A), so the precise weakness class is unspecified, but the integrity-only, unauthenticated network profile is consistent with an input-validation or parsing defect that lets attackers manipulate data integrity without breaching confidentiality or availability. The advisory also flags the legacy sandbox path: sandboxed Java Web Start applications and applets that load untrusted internet-borne code and rely on the Java sandbox for isolation.

RemediationAI

Apply the Oracle Critical Patch Update of July 2026 (patch available per vendor advisory, https://www.oracle.com/security-alerts/cpujul2026.html), upgrading each affected runtime to the fixed release published in that CPU for its train (8, 11, 17, 21, 25, 26 for Java SE; the corresponding 17/21 builds for GraalVM for JDK; and the fixed 21.3.x build for GraalVM Enterprise Edition); the input does not enumerate exact fixed build numbers, so pull them directly from the CPU release notes. Where immediate patching is not possible, reduce exposure by not passing untrusted, internet-sourced data into the affected Libraries APIs and by fronting exposed web services with strict input validation, accepting that this only narrows the attack surface rather than closing the flaw. For the sandbox-specific path, disable or remove Java Web Start and browser applet execution and avoid loading untrusted code under the Java sandbox - a low-cost control given both technologies are deprecated and rarely needed, with the trade-off of breaking any legacy applet/Web Start applications still in use.

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Vendor StatusVendor

SUSE

Severity: Important

Product	Status
SUSE Liberty Linux 8	Fixed
SUSE Liberty Linux 9	Fixed
openSUSE Tumbleweed	Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS	Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS	Affected

EUVD-2026-46549 vulnerability details – vuln.today

Back

Oracle Java SE EUVD-2026-46549

Severity by source

CVSS VectorVendor: oracle

Lifecycle Timeline

DescriptionCVE.org

Articles & Coverage 1

AnalysisAI

Technical ContextAI

RemediationAI

More in Java

Same weakness CWE-284 – Improper Access Control

Same technique Authentication Bypass

Vendor StatusVendor

SUSE

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External POC / Exploit Code