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Oracle Java SE CVE-2026-47063

| EUVDEUVD-2026-46549 HIGH
Improper Access Control (CWE-284)
2026-07-21 oracle GHSA-vw39-pj36-hc59
Authentication Bypass Java Oracle Oracle Java Se Oracle Graalvm For Jdk Oracle Graalvm Enterprise Edition Red Hat Suse
7.5
CVSS 3.1 · Vendor: oracle
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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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

Lifecycle Timeline

2
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. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify Java service exposing affected API
Delivery
Send crafted data via network protocol
Exploit
Reach vulnerable Libraries API
Execution
Trigger unauthorized data modification
Impact
Corrupt or delete critical data
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Vulnerability AssessmentAI

Exploitation Exploitation requires that the target application actually route attacker-controlled data into the affected Libraries APIs - Oracle names the concrete vector as 'through a web service which supplies data to the APIs' - or, alternatively, that the victim run the legacy sandboxed model (Java Web Start applications or Java applets that load untrusted internet code and rely on the Java sandbox). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The signals are moderately consistent but not alarming. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker identifies an internet-facing service built on an affected JDK that forwards user-supplied data into the vulnerable Libraries API, then sends crafted input over one of the supported protocols to trigger unauthorized modification, creation, or deletion of critical application data - for example tampering with records the service persists. No authentication or user interaction is required (PR:N/UI:N, AC:L), though no public exploit code is currently known.
Remediation 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. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

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. …

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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

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CVE-2026-47063 vulnerability details – vuln.today
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