CVE-2026-108581 in Octop
Summary
by MITRE • 10/10/2026
TencentCloud Octop through 1.0.2b6 contains a missing authorization vulnerability that allows authenticated low-privileged users to read stored provider API keys via GET /api/providers and GET /api/voice/providers. Attackers can query these endpoints, which only validate the JWT, to obtain plaintext LLM and voice provider API keys and abuse the upstream provider accounts.
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Analysis
by VulDB Data Team • 10/10/2026
The vulnerability identified in TencentCloud Octop versions up to 1.0.2b6 represents a critical failure in access control mechanisms within the application's backend architecture. Specifically, this is an insecure direct object reference or broken access control issue where the system fails to enforce proper authorization checks on specific API endpoints designed for managing provider configurations. The affected endpoints are GET /api/providers and GET /api/voice/providers, which serve as interfaces for retrieving stored credentials for Large Language Model services and voice processing providers respectively. While these endpoints require authentication via a JSON Web Token JWT, the implementation only validates that a valid token is present rather than verifying whether the authenticated user possesses the necessary privileges to access sensitive configuration data. This oversight allows any authenticated user with low-privileged roles to bypass intended security boundaries and retrieve confidential information that should be restricted to administrative or system-level accounts.
From a technical perspective, the flaw lies in the middleware or route handler logic responsible for processing requests to these specific paths. The application correctly implements authentication by checking the validity of the JWT but neglects to implement an authorization layer that maps user roles to resource permissions. In secure software design, especially within multi-tenant cloud environments like TencentCloud Octop, it is imperative that access control decisions are made based on the principle of least privilege and role-based access control RBAC models. By relying solely on authentication without subsequent authorization checks, the application exposes sensitive plaintext API keys for external AI providers. These keys act as credentials for upstream services such as OpenAI or other voice synthesis platforms, granting full operational capability to any entity possessing them.
The operational impact of this vulnerability is severe due to the nature of the exposed data. Plaintext API keys provide attackers with direct access to third-party provider accounts associated with the victim organization. Once an attacker obtains these keys through simple HTTP GET requests, they can abuse the upstream services for various malicious purposes including unauthorized computation which leads to significant financial costs as providers charge based on usage metrics such as tokens processed or minutes of voice generated. Furthermore, attackers may exploit these credentials to conduct prompt injection attacks using the victim's account identity, potentially generating harmful content that appears legitimate because it originates from a trusted source. This can lead to reputational damage and compliance violations if sensitive data is inadvertently leaked through AI-generated responses powered by compromised keys.
This vulnerability aligns with CWE-284 Improper Access Control as defined in the Common Weakness Enumeration database, specifically reflecting scenarios where access control decisions are not enforced or rely on insufficient validation mechanisms. In terms of offensive security frameworks, this behavior corresponds to ATT&CK technique T1078 Valid Accounts which describes adversaries using legitimate credentials to gain initial access and maintain persistence within a system. The exploitation vector is straightforward requiring only basic HTTP client capabilities making it highly accessible to automated scanning tools or script-kiddies who may discover the endpoint through standard enumeration techniques.
Mitigation strategies must focus on implementing robust authorization checks at the application layer immediately following authentication validation. Developers should ensure that every API endpoint verifies not just the presence of a valid token but also the specific permissions associated with that token's user role before returning sensitive data like API keys. Implementing strict RBAC policies where only users with administrative or configuration management roles can access provider settings is essential. Additionally, it is recommended to avoid storing plaintext secrets in database fields accessible via general-purpose APIs; instead consider using secure secret management solutions such as HashiCorp Vault or cloud-native key management services that abstract direct credential exposure. For existing deployments upgrading past version 1.0.2b6 resolves this issue by applying the vendor's patch which likely introduces proper role-based filtering logic to these endpoints ensuring that low-privileged users are denied access regardless of their authentication status.