CVE-2026-80462 in Chef Automate
Summary
by MITRE • 09/11/2026
A vulnerability in the Chef Automate API gateway and identity validation path may allow an unauthenticated actor to gain elevated access to protected Chef Automate functionality under specific conditions.
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Analysis
by VulDB Data Team • 09/11/2026
The identified security flaw resides within the authentication and authorization mechanisms of the Chef Automate application, specifically affecting its API gateway and identity validation pathways. This vulnerability stems from a logic error or misconfiguration in how the system validates user credentials and session tokens before granting access to administrative endpoints. Under normal operational parameters, unauthenticated requests should be rejected with an appropriate HTTP 401 Unauthorized response. However, due to this specific defect, certain API calls can bypass these checks entirely when executed under particular conditions that exploit gaps in the validation logic. This allows an actor who has not provided valid credentials or possesses no legitimate session token to interact directly with protected functionality intended for authenticated administrators only.
From a technical perspective, the root cause is classified as CWE-287 Improper Authentication and CWE-306 Missing Authentication for Critical Function. The API gateway fails to enforce strict identity verification on specific high-privilege endpoints, likely due to an oversight in route configuration or middleware ordering where authentication checks are skipped for certain paths. This bypass enables the execution of commands that modify system configurations, manage user accounts, deploy infrastructure code, and access sensitive operational data without any form of prior authorization. The vulnerability is particularly dangerous because it does not require complex exploitation techniques; rather, it relies on correctly formatted requests sent to specific API endpoints where the security controls are inadvertently disabled or bypassed through logical flaws in the request processing pipeline.
The operational impact of this vulnerability is severe and potentially catastrophic for organizations relying on Chef Automate for infrastructure automation and compliance management. An unauthenticated attacker could gain full administrative control over the environment, leading to a complete compromise of system integrity. This includes the ability to create new administrator accounts with persistent access, delete critical configuration files, modify deployment pipelines to inject malicious code into production environments, and exfiltrate sensitive data such as credentials stored in vaults or secrets managed by the platform. Furthermore, because Chef Automate often serves as a central hub for managing multiple infrastructure nodes, compromising this system could provide an attacker with a foothold to pivot laterally across the network, escalating their access from the management plane to the actual compute and storage resources being orchestrated.
In alignment with industry threat modeling frameworks such as MITRE ATT&CK, this vulnerability facilitates initial access and privilege escalation techniques categorized under T1078 Valid Accounts if an attacker creates new accounts, or more directly under T1528 Steal Application Access Token if session tokens are hijacked to maintain persistence. The lack of proper authentication also aligns with the broader category of broken object level authorization where the system fails to ensure that users can only access objects they have been explicitly granted permission to view or modify. This represents a critical failure in defense-in-depth strategies, as it removes one of the primary layers of security intended to protect administrative interfaces from external threats and internal misuse by unauthorized personnel.
To mitigate this risk, immediate action is required to apply vendor-provided patches that address the identity validation logic within the API gateway. Organizations should verify their current version against known vulnerable releases and upgrade to a secure baseline as soon as possible. In addition to patching, it is advisable to implement network-level controls such as restricting access to Chef Automate administrative interfaces to trusted IP ranges using firewalls or reverse proxies with strict ACLs. Enabling multi-factor authentication for all administrative accounts adds an additional layer of security that can mitigate the impact if credentials are compromised through other vectors. Regular audits of API gateway configurations and continuous monitoring for anomalous login attempts or unauthorized access patterns should also be established to detect any potential exploitation activities in real-time, ensuring rapid response capabilities against emerging threats targeting infrastructure automation platforms.