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Oracle WebCenter Sites CVE-2026-61017

| EUVDEUVD-2026-61307 HIGH
Improper Access Control (CWE-284)
2026-08-18 secalert_us@oracle.com GHSA-5hpw-6fp6-54vp
Oracle Authentication Bypass Webcenter Sites
8.8
CVSS 3.1 · Vendor: oracle
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Severity by source

Vendor (oracle) PRIMARY
8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
8.8 HIGH

Network access via HTTP, low complexity per Oracle's 'easily exploitable' language, low privilege required; full C/I/A consistent with Oracle's explicit system takeover characterization.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

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

Lifecycle Timeline

2
Analysis Generated
Aug 19, 2026 - 04:14 vuln.today
CVE Published
Aug 18, 2026 - 21:16 nvd
HIGH 8.8

DescriptionCVE.org

Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites). 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 Sites. Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Sites. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

AnalysisAI

Full system takeover of Oracle WebCenter Sites is achievable by a low-privileged, network-connected attacker via HTTP, with Oracle itself classifying this as 'easily exploitable.' Both currently supported versions - 12.2.1.4.0 and 14.1.2.0.0 - within the Oracle Fusion Middleware product line are confirmed affected, covering the entirety of the active install base. The CVSS 3.1 score of 8.8 (C:H/I:H/A:H) reflects complete compromise of confidentiality, integrity, and availability; no public exploit code or CISA KEV listing has been identified at the time of this analysis.

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Vulnerability AssessmentAI

Exploitation The attacker must possess a valid low-privilege account on the Oracle WebCenter Sites instance (CVSS PR:L) and must have network access to the application over HTTP (CVSS AV:N). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The 8.8 CVSS 3.1 score is well-supported by the metric breakdown: network-reachable (AV:N), low attack complexity (AC:L), low privilege required (PR:L), no user interaction (UI:N), and full C/I/A impact. … 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 patches issued under the Oracle Critical Security Patch Update (CPU) for August 2026, available at https://www.oracle.com/security-alerts/cspuaug2026.html. … 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 Oracle WebCenter Sites deployments, document versions and network exposure, and assess which systems are internet-facing. …

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CVE-2026-61017 vulnerability details – vuln.today
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