Description

Improper access control in Azure Logic Apps allows an authorized attacker to disclose information over a network.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "9.6",
  "pubDate": "2026-08-07T00:16:31.827Z",
  "pubdate": "2026-08-07T00:16:31.827Z",
  "executiveSummary": "An improper access control vulnerability has been identified within Azure Logic Apps, a cloud-based workflow integration service. This security flaw enables an authenticated adversary with network access to execute unauthorized information disclosure operations across the network boundaries of the affected deployment. The risk implications include the potential exposure of sensitive enterprise data, operational logic, workflow parameters, and integrated service credentials managed by the orchestration engine. The vulnerability stems from insufficient enforcement of authorization boundaries and access control lists within the underlying architecture of Azure Logic Apps, permitting unauthorized read operations by principals that lack the requisite privileges. Exploitation of this security defect requires the attacker to possess prior authorization within the broader cloud environment, establishing an initial foothold to interact with the target logic app endpoints. Successfully executing this attack does not necessitate physical access or complex multi-stage exploitation frameworks; rather, it relies on abusing the inherent trust and misconfigured permission schemes governing resource interactions over the network. Remediation requires rigorous auditing of identity and access management policies, enforcing strict role-based access control, and applying official vendor updates or configuration baselines as provided by Microsoft.",
  "technicalDetails": "The vulnerability resides within the authorization enforcement mechanism of Azure Logic Apps, specifically in how the service validates security contexts during inter-component communication and resource querying over the network. The root cause of the flaw is an inadequate validation of access control lists and authorization tokens when processing incoming requests targeted at specific logic app workflows or trigger endpoints. Because the access control enforcement logic fails to adequately verify whether the requesting authenticated principal possesses the precise administrative or operational scoping required to access the target workflow artifacts, a privilege boundary violation occurs. The attack flow initiates when an adversary, possessing baseline authentication credentials or an authorized session within the cloud tenant, crafts a specifically formatted network request directed toward vulnerable Azure Logic Apps API surfaces or execution endpoints. The vulnerable component parses the request, and due to the improper access control validation logic, bypasses the granular security checks that should normally restrict visibility based on the principle of least privilege. As the payload is processed, the application exposes sensitive internal state data, configuration parameters, execution history, or payload contents back to the unauthorized requester across the network. The network exposure is inherently tied to the cloud-native architecture of Azure Logic Apps, where endpoints are accessible over standard network protocols depending on the ingress configurations and integration bindings. The post-exploitation impact is characterized by unauthorized information disclosure, where the adversary harvests sensitive credentials, connection strings, or business logic data embedded within the workflow definitions. This leaked information can subsequently be leveraged to facilitate lateral movement, escalate privileges within the cloud environment, or orchestrate further targeted attacks against integrated downstream services and data stores."
}