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Oracle Java SE CVE-2026-61308

| EUVDEUVD-2026-61366 MEDIUM
Improper Access Control (CWE-284)
2026-08-18 secalert_us@oracle.com GHSA-wvj6-93q8-xhcm
Authentication Bypass Oracle Java Red Hat Suse
6.8
CVSS 3.1 · Vendor: oracle
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Severity by source

Vendor (oracle) PRIMARY
6.8 MEDIUM
AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
vuln.today AI
6.8 MEDIUM

Network vector via HTTP confirmed; AC:H reflects Oracle's explicit 'difficult to exploit' characterization and implied protocol preconditions; PR:N per unauthenticated path; S:C and C:H reflect scope change with critical confidentiality loss; no integrity or availability impact applies.

3.1 AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
4.0 AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
SUSE
MEDIUM
qualitative
Red Hat
6.8 MEDIUM
qualitative

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
Aug 19, 2026 - 05:45 vuln.today
CVE Published
Aug 18, 2026 - 21:16 nvd
MEDIUM 6.8

DescriptionCVE.org

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Networking). Supported versions that are affected are Oracle Java SE: 8u501, 11.0.32, 17.0.20, 21.0.12, 25.0.4, 26.0.2; Oracle GraalVM for JDK: 17.0.20 and 21.0.12; Oracle GraalVM Enterprise Edition: 21.3.19. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. While the vulnerability is in Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to 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 6.8 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N).

AnalysisAI

Unauthorized data exposure in Oracle Java SE's Networking component allows unauthenticated remote attackers via HTTP to access critical or all data accessible to the affected Java process, with a confirmed scope change that can impact systems and products beyond the JDK's own security boundary. Affected versions span a wide range across Oracle Java SE (8u501 through 26.0.2), Oracle GraalVM for JDK (17.0.20 and 21.0.12), and Oracle GraalVM Enterprise Edition (21.3.19), covering both server-side Java API consumers and client-side Java Web Start or sandboxed applet deployments. …

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Attack ChainAIDerived

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Vulnerability AssessmentAI

Exploitation Exploitation requires network access to a system running one of the affected Oracle Java SE, GraalVM for JDK, or GraalVM Enterprise Edition versions reachable via HTTP. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 base score of 6.8 reflects a meaningfully exploitable but conditionally constrained vulnerability: network-accessible (AV:N), no privileges required (PR:N), no user interaction (UI:N), but with high attack complexity (AC:H) indicating specific preconditions - likely precise HTTP message sequencing, protocol state manipulation, or timing - must be satisfied. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Apply Oracle's Critical Patch Update for August 2026, documented at https://www.oracle.com/security-alerts/cspuaug2026.html, which addresses this vulnerability across all affected Oracle Java SE, GraalVM for JDK, and GraalVM Enterprise Edition versions listed above. … Detailed patch versions, workarounds, and compensating controls in full report.
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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Liberty Linux 10 Fixed
SUSE Liberty Linux 8 Fixed
SUSE Liberty Linux 9 Fixed
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Affected

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CVE-2026-61308 vulnerability details – vuln.today
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