---
id: "CVE-2026-91347"
kind: "vulnerability"
aliases: ["CVE-2026-91347"]
title: "Oracle E-Business Suite iSupport: low-privileged HTTP attacker can modify data"
severity: "high"
cvss: 8.5
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["erp", "isupport", "oracle-ebs", "other", "service-requests"]
not_affected_if: ["module-not-installed"]
published_at: "2026-10-20T22:20:37+00:00"
first_seen_at: "2026-10-23T21:57:26+00:00"
updated_at: "2026-10-25T03:00:25+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91347", "first_seen_at": "2026-10-23T21:57:26+00:00"}]
---

# Oracle E-Business Suite iSupport: low-privileged HTTP attacker can modify data

Oracle E-Business Suite's iSupport module, under Service Requests, lets a low-privileged user with network access over HTTP create, delete or modify critical data and cause partial denial of service. The flaw has a scope change, so it can also affect other products connected to iSupport.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed iSupport patch level for Oracle E-Business Suite 12.2.3 through 12.2.15 in the Oracle E-Business Suite patch history
- unknown for other checks, the sources do not say

## Fix

- Apply the Oracle Critical Patch Update fix for iSupport in Oracle E-Business Suite 12.2.3-12.2.15, as listed in Oracle's advisory
- unknown for a specific patch number, the sources do not say

## Timeline

- 2026-10-23T21:57:26+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-91347

## From the sources

Vulnerability in the iSupport product of Oracle E-Business Suite (component: Service Requests).  Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise iSupport.  While the vulnerability is in iSupport, 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 iSupport accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of iSupport. CVSS 3.1 Base Score 8.5 (Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L).

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_