---
id: "CVE-2026-91370"
kind: "vulnerability"
aliases: ["CVE-2026-91370"]
title: "Oracle Siebel CRM Cloud: unauthenticated read of a subset of data"
severity: "medium"
cvss: 5.3
epss: 0.00316
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["cloud", "oracle", "siebel-crm", "vendor"]
not_affected_if: ["not-using-siebel-crm-cloud"]
published_at: "2026-10-20T22:20:39+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-2026-91370", "first_seen_at": "2026-10-23T21:57:26+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-91370", "first_seen_at": "2026-10-25T12:38:52+00:00"}]
---

# Oracle Siebel CRM Cloud: unauthenticated read of a subset of data

Siebel CRM Cloud Applications, in the Siebel Cloud Manager component, has a flaw that lets an unauthenticated remote attacker send HTTP requests and read a subset of accessible data. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N, so the impact is confidentiality only.

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

## How to check

- Check whether your organization uses Oracle Siebel CRM Cloud Applications in the affected range 22.3 to 26.9, as reported in the NVD entry
- unknown for how to verify your specific tenant version from the sources

## Fix

- Apply the patch or update Oracle publishes for Siebel CRM Cloud Applications (version to move to: unknown)
- Follow the Oracle Critical Patch Update advisory linked from the NVD entry (unknown in these sources)

## Timeline

- 2026-10-23T21:57:26+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-91370
- 2026-10-25T12:38:52+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-91370

## From the sources

Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager).  Supported versions that are affected are 22.3-26.9. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Cloud Applications.  Successful attacks of this vulnerability can result in  unauthorized read access to a subset of Siebel CRM Cloud Applications accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

---

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