---
id: "CVE-2026-91445"
kind: "vulnerability"
aliases: ["CVE-2026-91445"]
title: "Oracle Siebel CRM End User: unauthenticated HTTP flaw exposes and alters customer data"
severity: "high"
cvss: 8.2
epss: 0.00244
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["crm", "enterprise", "oracle", "self-hosted", "siebel-crm", "vendor"]
not_affected_if: ["version-outside-17.0-26.9"]
published_at: "2026-10-20T22:20:48+00:00"
first_seen_at: "2026-10-23T21:57:26+00:00"
updated_at: "2026-10-25T12:38:52+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91445", "first_seen_at": "2026-10-23T21:57:26+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-91445", "first_seen_at": "2026-10-25T12:38:52+00:00"}]
---

# Oracle Siebel CRM End User: unauthenticated HTTP flaw exposes and alters customer data

A flaw in the Communications Panel/Dashboard component of Siebel CRM End User lets an unauthenticated attacker reach the application over HTTP. A successful attack can read all data the End User interface can access and modify or delete some of it.

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

## How to check

- Confirm whether Siebel CRM End User is deployed and which version runs, with the version reported in the Siebel admin console or installed package (unknown if the sources do not give a command)
- Check whether the Communications Panel/Dashboard component is enabled in the deployment (unknown if the sources do not say how)

## Fix

- Apply the Oracle Siebel CRM security patch for the affected End User release (fixed version unknown; the sources only list affected versions 17.0-26.9)
- Until patched, restrict HTTP access to the Siebel End User interface to trusted networks (unknown if the sources give a specific control)

## Timeline

- 2026-10-23T21:57:26+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-91445
- 2026-10-25T12:38:52+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-91445

## From the sources

Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Communications Panel/Dashboard).  Supported versions that are affected are 17.0-26.9. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM End User.  Successful attacks of this vulnerability can result in  unauthorized access to critical data or complete access to all Siebel CRM End User accessible data as well as  unauthorized update, insert or delete access to some of Siebel CRM End User accessible data. CVSS 3.1 Base Score 8.2 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N).

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