Oracle BPM Suite: Improper access control in Fabric Layer
Summary
Oracle Business Process Management Suite (part of Oracle Fusion Middleware, component Fabric Layer) versions 12.2.1.4.0 and 14.1.2.0.0 contain an improper access control flaw (CWE-284). An attacker with a low-privileged account and network access via HTTP can create, modify or delete critical data and access data the product can reach, with impact beyond the product itself (scope change). The CVSS 3.1 base score is 9.6 (critical). Exploitation in the wild is not known.
Affected
- Oracle Business Process Management Suite 12.2.1.4.0
- Oracle Business Process Management Suite 14.1.2.0.0
Fixed in
- Fix included in the Oracle Critical Patch Update of October 2026 (published 20 October 2026).
- Patch number and fixed release: Unknown. Check the Oracle advisory and My Oracle Support.
Workaround
- Unknown. No Oracle-confirmed workaround.
- Generic hardening: restrict HTTP access to BPM Suite to trusted IP ranges or VPNs and make sure only authenticated users can reach Fabric Layer endpoints.
- Review BPM user accounts and self-registration.
Exploitation
- Not known to be exploited in the wild as of 21 October 2026.
- Not in the CISA KEV catalog as of 21 October 2026.
- No public proof of concept found in the research; not checked in depth.
Our recommendation
- Check whether Oracle BPM Suite 12.2.1.4.0 or 14.1.2.0.0 is in use.
- If it is, apply the October 2026 Oracle Critical Patch Update.
- Make sure BPM endpoints are not directly reachable from the internet.
- Review logs for unexpected HTTP requests to Fabric Layer endpoints.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Oracle Security Alert: October 2026 CPU www.oracle.com
- OpenCVE: CVE-2026-91243 app.opencve.io
- Vulners: CVE-2026-91243 vulners.com
- Vulners: Oracle CPU October 2026 matrix vulners.com
- Strix: CVE-2026-91243 www.strix.ai
- Vulners: CNNVD-2026-26403494 vulners.com
- Brandefense: Oracle October 2026 CPU brandefense.io
- SecurityOnline: Oracle Fusion Middleware vulnerabilities October 2026 securityonline.info
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, 22:18.
Original description (NVD)
Vulnerability in the Oracle Business Process Management Suite product of Oracle Fusion Middleware (component: Fabric Layer). 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 Business Process Management Suite. While the vulnerability is in Oracle Business Process Management Suite, 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 Business Process Management Suite accessible data as well as unauthorized access to critical data or complete access to all Oracle Business Process Management Suite 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).
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.
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