Oracle JD Edwards EnterpriseOne Tools: Authentication bypass in Installation Security
Summary
Oracle JD Edwards EnterpriseOne Tools versions 9.2.0.0 to 9.2.26.5 are affected by a flaw in the Installation Security component. An unauthenticated attacker with network access via HTTPS can compromise the product, which may allow unauthorized creation, modification or deletion of data and access to data accessible through EnterpriseOne Tools. The CVSS 3.1 base score is 9.1 (critical), and the attack requires no privileges or user interaction.
Affected
- Oracle JD Edwards EnterpriseOne Tools 9.2.0.0 to 9.2.26.5 (as listed in the CVE record)
Fixed in
- Unknown. Fixes are shipped in the October 2026 Critical Patch Update (CPU). The exact patch number and fixed release were not confirmed; check Oracle's advisory risk matrix for this CVE.
Workaround
- No vendor workaround found.
- Interim (not vendor-sourced): restrict network access to EnterpriseOne Tools HTTPS endpoints and limit access to installation and administration paths until patched.
Exploitation
- CISA SSVC: exploitation none, automatable yes, total technical impact.
- Not listed in CISA KEV; EPSS below 1%.
- No public proof of concept found.
Our recommendation
- Identify all EnterpriseOne Tools installations and their exact versions.
- Check whether any instance is reachable from the internet; if so, treat as high priority.
- Apply the October 2026 CPU patch for CVE-2026-91305 after testing, using the details in Oracle's advisory.
- Until patched, restrict network access to the affected endpoints and review web logs for unexpected requests.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Oracle CPU advisory, October 2026 www.oracle.com
- Oracle CVE-to-advisory map www.oracle.com
- NVD record via Vulners vulners.com
- CISA SSVC and EPSS via OpenCVE app.opencve.io
- Strix CVE summary www.strix.ai
- Tenable October 2026 CPU overview www.tenable.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 31 Oct 2026, 05:43.
Original description (NVD)
Vulnerability in the JD Edwards EnterpriseOne Tools product of Oracle JD Edwards (component: Installation Security). Supported versions that are affected are 9.2.0.0-9.2.26.5. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTPS to compromise JD Edwards EnterpriseOne Tools. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all JD Edwards EnterpriseOne Tools accessible data as well as unauthorized access to critical data or complete access to all JD Edwards EnterpriseOne Tools accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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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