Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Unauthenticated HTTP-reachable authentication bypass (AV:N/AC:L/PR:N/UI:N) yielding full data read (C:H) and limited modification (I:L), with no availability impact (A:N).
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 unauthenticated attacker with network access via HTTP to compromise Oracle Coherence. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Coherence accessible data as well as unauthorized update, insert or delete access to some of Oracle Coherence accessible data. CVSS 3.1 Base Score 8.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N).
AnalysisAI
Unauthorized data access in Oracle Coherence (Oracle Fusion Middleware Core component) lets an unauthenticated, network-based attacker read critical data and perform limited unauthorized modification over HTTP. Disclosed in Oracle's July 2026 Critical Patch Update and tagged as an authentication bypass, the flaw carries CVSS 8.2 (C:H/I:L) and affects supported versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but Oracle rates it easily exploitable with no privileges required.
Technical ContextAI
Oracle Coherence is a Java-based in-memory data grid (distributed cache and computing platform) embedded in Oracle Fusion Middleware and used to scale and cluster application state, often behind WebLogic Server. The vulnerable 'Core' component is exposed over HTTP, and the 'Authentication Bypass' tag indicates the weakness allows an actor to reach protected data operations without valid credentials. No CWE was assigned in the source data, but the behavior (unauthenticated access to grid-managed data with high confidentiality and low integrity impact) is consistent with an improper authentication / missing access-control class of flaw. The single affected CPE, cpe:2.3:a:oracle_corporation:oracle_coherence, confirms Oracle Coherence itself as the target rather than a bundled third-party library.
RemediationAI
Apply the fixes from Oracle's July 2026 Critical Patch Update; patch availability is confirmed per the advisory at https://www.oracle.com/security-alerts/cpujul2026.html, though the source data does not enumerate exact patched build numbers per branch, so consult the CPU matrix for the specific patch corresponding to your installed version (12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 or 15.1.1.0.0). Because Oracle CPU patches are cumulative and periodic, prioritize scheduling given the unauthenticated network vector. As compensating controls until patching, restrict network access to Coherence's HTTP-exposed Core endpoints to trusted management/cluster subnets via firewall or security-group rules, place any Coherence-fronting HTTP listener behind an authenticating reverse proxy, and disable or bind cluster/management HTTP services to internal interfaces only - the trade-off is that overly aggressive network restriction can break legitimate cross-node cluster communication or management tooling, so validate against your topology before enforcing.
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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-2026-46699
GHSA-q65j-855g-vj3x