CVE-2026-100583 in Discord
Summary
by MITRE • 09/26/2026
OpenClaw Discord versions before 2026.7.1 contain an authorization bypass vulnerability in guild metadata read actions that allows lower-trust senders to retrieve information excluded by channel allowlists. Attackers can bypass the configured Discord read-target policy to access guild metadata from servers or channels outside the operator's allowlist.
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Analysis
by VulDB Data Team • 09/26/2026
The identified security flaw resides within OpenClaw Discord integration versions prior to 2026.7.1, specifically targeting the mechanism used for reading and processing guild metadata. This vulnerability represents a critical authorization bypass that undermines the intended access control policies configured by server administrators. In standard Discord bot architectures, channel allowlists serve as a primary defense layer, restricting which channels or servers an application can interact with to ensure data privacy and operational scope adherence. However, in this specific implementation, the logic governing metadata retrieval fails to enforce these boundaries effectively when processing requests from lower-trust senders.
Technically, the flaw stems from insufficient validation of the sender's trust level against the configured read-target policy during guild metadata operations. When a request is made to retrieve information about a server or channel that falls outside the operator's explicit allowlist, the system incorrectly processes the query as valid rather than rejecting it based on the established permissions. This oversight allows attackers who have gained some level of access within the Discord ecosystem to exploit this gap and extract sensitive guild metadata from restricted environments. The vulnerability essentially decouples the authentication mechanism from the authorization checks required for specific data types, leading to a situation where identity verification succeeds but permission validation fails.
The operational impact of this vulnerability is significant as it compromises the confidentiality of server configurations and structural information that administrators intended to keep private or limited in scope. By bypassing channel allowlists, malicious actors can map out internal network structures, identify sensitive channels, and potentially gather intelligence for further attacks such as social engineering or targeted phishing campaigns within those restricted areas. This exposure violates the principle of least privilege, allowing entities with minimal trust levels to access resources that should be strictly isolated from their scope of operation.
From a classification perspective, this issue aligns with CWE-287 Improper Authentication and CWE-940 Improper Authorization of Access Control Lists since it involves failing to enforce intended restrictions on data retrieval based on user roles or channel permissions. In the context of the MITRE ATT&CK framework for cloud environments, this behavior corresponds to techniques related to Discovery where adversaries gather information about their environment to plan subsequent actions, specifically leveraging misconfigured access controls to expand their reach beyond authorized boundaries.
To mitigate this vulnerability, organizations using OpenClaw Discord integrations must immediately upgrade to version 2026.7.1 or later, which contains the necessary patches for these authorization checks. Until an update is applied, administrators should review and tighten channel allowlists to minimize exposure surfaces while monitoring logs for unusual metadata retrieval patterns from low-trust sources. Implementing additional logging alerts for access attempts to restricted guilds can also help in detecting exploitation attempts before significant data exfiltration occurs. Regular audits of bot permissions and adherence to strict least-privilege principles are essential preventive measures against similar authorization bypass flaws in future deployments.