Oracle WebCenter Sites: Authentication bypass allows unauthenticated takeover
Summary
Oracle WebCenter Sites, part of Oracle Fusion Middleware, contains a flaw in authentication (CWE-287, CWE-306) that can be exploited remotely over HTTP. An unauthenticated attacker with network access can compromise the product, and successful attacks can lead to a full takeover of the system. The CVSS score is 9.8 (Critical), and no user interaction is required.
Affected
- Oracle WebCenter Sites 12.2.1.4.0
- Oracle WebCenter Sites 14.1.2.0.0
Fixed in
Unknown. Fix is included in the Oracle Critical Patch Update October 2026; patch identifiers per version must be confirmed in the Oracle advisory.
Workaround
Unknown. No vendor workaround has been confirmed.
Exploitation
- No evidence of exploitation in the wild found at time of writing.
- EPSS 0.00538 (model estimate, low predicted probability).
- CISA SSVC: Automatable yes, Technical Impact total, Exploitation none.
- NVD status was Awaiting Analysis.
Our recommendation
- Inventory all WebCenter Sites 12.2.1.4.0 and 14.1.2.0.0 installations, including test and staging systems.
- Check for internet exposure and restrict access from untrusted networks where not required.
- Apply the October 2026 CPU after confirming the patch for your exact version.
- Review web and application logs for unusual unauthenticated requests since 20 October 2026.
- Re-check NVD, CISA KEV and the Oracle advisory for updates.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Oracle Critical Patch Update Advisory October 2026 www.oracle.com
- Oracle CPU blog October 2026 blogs.oracle.com
- CVE record aggregator (CNA data, EPSS) vulners.com
- Affected versions and vector summary www.strix.ai
- Positive Technologies entry vulners.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 30 Oct 2026, 17:21.
Original description (NVD)
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 unauthenticated 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 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
Affected? We can help.
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