Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Network HTTP attack with low complexity and a low-privilege account (PR:L), no user interaction; scope change to other products, full confidentiality and integrity loss but no availability impact.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.org
Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Coherence. While the vulnerability is in Oracle Coherence, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Coherence accessible data as well as unauthorized access to critical data or complete access to all Oracle Coherence accessible data. CVSS 3.1 Base Score 9.6 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N).
AnalysisAI
Authentication bypass and data compromise in Oracle Coherence (Oracle Fusion Middleware Core component) versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0 allows a low-privileged, network-adjacent attacker to read, create, delete or modify all Coherence-accessible data over HTTP. Because the flaw carries a scope change, successful exploitation can significantly impact additional products beyond Coherence itself, yielding a CVSS 3.1 score of 9.6. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but the low attack complexity and low privilege requirement make it a high-priority patch item.
Technical ContextAI
Oracle Coherence is Oracle's distributed in-memory data grid, used to cache and share application state across clustered JVMs and commonly deployed as part of Oracle Fusion Middleware and WebLogic-based stacks. The vulnerability resides in the Core component and is exposed over HTTP, indicating the Coherence management/cluster HTTP interface rather than the native TCMP cluster protocol. Oracle does not assign a CWE (CWE: N/A), but the vendor tag 'Authentication Bypass' together with the CVSS confidentiality and integrity impacts (C:H/I:H, A:N) points to a broken access-control / improper authentication root cause (CWE-287/CWE-284 class) that lets an attacker act with more authority than their assigned privilege level.
RemediationAI
Apply the patches from the Oracle Critical Patch Update of July 2026 (https://www.oracle.com/security-alerts/cpujul2026.html) - patch available per vendor advisory; Oracle CPUs ship fixes as quarterly patch bundles/PSUs for each affected line (12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 15.1.1.0.0), and the exact patched build numbers should be pulled from the CPU matrix and My Oracle Support. Until patching is complete, reduce exposure of the Coherence HTTP management/cluster endpoints: restrict network access to Coherence management interfaces to trusted administrative hosts via firewall/network segmentation (side effect - breaks remote management tooling that relies on those endpoints), disable or lock down any Coherence REST/management HTTP services that are not required (side effect - loss of HTTP-based monitoring/administration), and tighten authentication and role assignments so that low-privilege accounts cannot reach the vulnerable interface. Because the flaw involves a scope change, also review and isolate downstream products that trust the Coherence cluster.
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Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-46654
GHSA-ggjr-xmrm-mhgh