EUVD-2026-79367
GHSA-5xvv-9w25-q3fw
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Network HTTP with low complexity, requires a low-privileged account (PR:L), no user interaction; scope change to adjacent products and full CIA takeover per Oracle's description.
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
4DescriptionNVD
Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Composer). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle WebCenter Portal. While the vulnerability is in Oracle WebCenter Portal, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Portal. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
AnalysisAI
A low-privileged authenticated attacker with HTTP network access can fully compromise Oracle WebCenter Portal through its Composer component, achieving complete loss of confidentiality, integrity and availability plus a scope change that can extend impact to connected downstream products. Only versions 12.2.1.4.0 and 14.1.2.0.0 are affected, and the attack requires no user interaction and has low complexity - the sole meaningful barrier is that an attacker must already hold valid credentials (PR:L), so this is not a pre-authentication flaw. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires a valid low-privileged account on Oracle WebCenter Portal (PR:L) with network HTTP access to the Composer component; exploitation targets versions 12.2.1.4.0 and 14.1.2.0.0. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine high-priority issue, though slightly gated by an authentication requirement. … 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 the fix from the Oracle Critical Security Patch Update referenced at https://www.oracle.com/security-alerts/cspusep2026.html, which covers WebCenter Portal Composer for versions 12.2.1.4.0 and 14.1.2.0.0 - Oracle CPUs ship full replacement patches rather than hotfixes for these middleware components, so the exact patched build number should be taken from that advisory, as no specific fix version was provided in the input data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all instances of Oracle WebCenter Portal and confirm whether any run version 12.2.1.4.0 or 14.1.2.0.0; for confirmed instances, restrict network reachability to the Composer component and administrative interfaces to trusted internal segments only, and audit and reduce the population of low-privileged accounts that can authenticate to the portal, enforcing multi-factor authentication and disabling dormant or shared credentials. …
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