---
id: "CVE-2026-101463"
kind: "vulnerability"
aliases: ["CVE-2026-101463"]
title: "Oracle Siebel CRM End User: unauthenticated HTTP flaw exposes critical data"
severity: "high"
cvss: 7.5
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["enterprise-crm", "oracle", "self-hosted", "siebel-crm", "vendor"]
not_affected_if: ["unsupported-version-outside-17.0-26.9"]
published_at: "2026-10-20T22:17:55+00:00"
first_seen_at: "2026-10-23T21:57:21+00:00"
updated_at: "2026-10-25T03:20:33+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101463", "first_seen_at": "2026-10-23T21:57:21+00:00"}]
---

# Oracle Siebel CRM End User: unauthenticated HTTP flaw exposes critical data

A flaw in the UIF Open UI component of Oracle Siebel CRM End User lets an unauthenticated remote attacker send HTTP requests to the application. Successful exploitation gives unauthorized read access to critical data or to all data the End User application can reach.

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

## How to check

- Check the installed Siebel CRM version against the affected range 17.0-26.9 listed in the Oracle advisory
- Confirm whether the Siebel CRM End User web interface is reachable from untrusted networks, which the sources do not say explicitly

## Fix

- Apply the Oracle Critical Patch Update fix for Siebel CRM End User; the exact patched version is unknown from the sources
- Check the Oracle security alert for the patch level that resolves the UIF Open UI issue

## Timeline

- 2026-10-23T21:57:21+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101463

## From the sources

Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: UIF Open UI).  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. CVSS 3.1 Base Score 7.5 (Confidentiality impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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_