Industrial
CVE-2026-27449
HIGH
GHSA-86vq-ccwf-rm62
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessDiscover unauthenticated API endpoint
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ExploitSupply arbitrary user-controlled identifier parameter
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ExecutionRetrieve sensitive data from enumeration
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ImpactExfiltrate confidential records
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK
1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Umbraco Engage versions prior to 16.2.1 and 17.1.1 with exposed API endpoints lacking authentication enforcement. No special conditions — remote unauthenticated exploitation against default Umbraco Engage installations. |
| Impact | CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None. Exploitation no authentication required. Exploitable via remote/network. |
| Exploit ScenarioDerived | A remote attacker without authentication could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Umbraco Engage versions prior to 16.2.1 and 17.1.1 expose unauthenticated API endpoints that lack access control, allowing remote attackers to retrieve sensitive data by directly querying endpoints with arbitrary identifier parameters. An attacker can enumerate records at scale without authentication or valid session credentials, potentially exposing confidential business intelligence information. No patch is currently available for affected installations.
Earlier versions of this analysis (1)
Umbraco Engage is a business intelligence platform. A vulnerability has been identified in Umbraco Engage versions up to 16.2.1 is affected by improper access control (CVSS 7.5).
RemediationAI
Update to version 16.2.1 or later. Restrict network access to the affected service where possible.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in nuget
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability (CWE-284: Improper Access Control) exists in the API component. Umbraco Engage is a business intelligence platform. A vulnerability has been identified in Umbraco Engage prior to versions 16.2.1 and 17.1.1 where certain API endpoints are exposed without enforcing authentication or authorization checks. The affected endpoints can be accessed directly over the network without requiring a valid session or user credentials. By supplying a user-controlled identifier parameter (e.g., ?id=), an attacker can retrieve sensitive data associated with arbitrary records.
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
2DescriptionGitHub Advisory
Umbraco Engage is a business intelligence platform. A vulnerability has been identified in Umbraco Engage prior to versions 16.2.1 and 17.1.1 where certain API endpoints are exposed without enforcing authentication or authorization checks. The affected endpoints can be accessed directly over the network without requiring a valid session or user credentials. By supplying a user-controlled identifier parameter (e.g., ?id=), an attacker can retrieve sensitive data associated with arbitrary records. Because no access control validation is performed, the endpoints are vulnerable to enumeration attacks, allowing attackers to iterate over identifiers and extract data at scale. An unauthenticated attacker can retrieve sensitive Engage-related data by directly querying the affected API endpoints. The vulnerability allows arbitrary record access through predictable or enumerable identifiers. The confidentiality impact is considered high. No direct integrity or availability impact has been identified. The scope of exposed data depends on the deployment but may include analytics data, tracking data, customer-related information, or other Engage-managed content. The vulnerability affects both v16 and v17. Patches have already been released. Users are advised to update to 16.2.1 or 17.1.1. No known workarounds are available.
Executive ViewAI
Umbraco Engage versions up to 16.2.1 contain an access control vulnerability that could allow unauthorized users to access sensitive business intelligence data. Organizations using affected versions face potential data breach and compliance risks until remediation is completed.
Implement network segmentation to restrict access by IP/VLAN; deploy WAF rules to detect and block access control bypass attempts; enforce multi-factor authentication for all Umbraco Engage accounts; disable non-essential features if they depend on vulnerable access control mechanisms; monitor authentication and authorization logs for anomalies; restrict API access through IP whitelisting and API key rotation.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
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