CVE-2026-77141 in Club Directory Extension
Summary
by MITRE • 08/25/2026
The extension resolves the targeted club record from a user-supplied request argument in its frontend edit, update, and activate actions, but performs no ownership check in any of them. An unauthenticated visitor who knows the UID of a club record can send a direct request to the update or activate action and overwrite that record, or publish one still awaiting approval, without owning it.
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Analysis
by VulDB Data Team • 08/25/2026
The identified vulnerability represents a critical failure in access control mechanisms within the application's frontend logic for managing club records. Specifically, the extension retrieves targeted club records based on user-supplied request arguments during edit, update, and activate operations but completely omits any verification of ownership or administrative privileges associated with those actions. This architectural flaw allows an unauthenticated attacker who possesses the unique identifier UID of a specific club record to bypass intended security boundaries entirely. By crafting direct HTTP requests to the update or activate endpoints, the attacker can manipulate data belonging to other users without authorization, effectively treating protected resources as public entities accessible to any party with knowledge of their identifiers.
From a technical perspective, this flaw is classified under CWE-284 Improper Access Control and aligns closely with ATT&CK technique T1078 Valid Accounts if the attacker exploits existing credentials, or more broadly with unauthorized resource modification patterns found in web application attacks. The absence of server-side validation regarding whether the requesting user holds ownership rights over the target record constitutes a severe logic error. In secure software design, every state-changing operation must verify that the initiator has explicit permission to modify the specific data instance involved. Here, the reliance solely on client-supplied identifiers without cross-referencing against an access control matrix or session-based permissions creates a direct path for privilege escalation and unauthorized modification.
The operational impact of this vulnerability is significant, affecting both data integrity and availability within the system. An attacker can overwrite critical information associated with any club record, potentially altering contact details, descriptions, or other sensitive attributes to malicious content. Furthermore, the ability to activate records that are still awaiting approval allows an adversary to bypass moderation workflows entirely. This means that unverified or inappropriate content can be published immediately without undergoing the required review process, undermining trust in the platform and exposing users to potential misinformation or harmful material. Such actions could also lead to reputational damage for legitimate club owners whose data has been tampered with by unauthorized parties.
To mitigate this vulnerability, immediate implementation of robust server-side access control checks is essential. The application must verify that the authenticated user initiating an update or activation request holds explicit ownership rights over the specific record identified in the request parameters. This can be achieved by querying the database to confirm a relationship between the current session's user ID and the target record's owner field before processing any modifications. Additionally, implementing role-based access control ensures that only designated administrators or verified owners possess elevated privileges for these actions. Input validation should also be enforced to ensure that supplied identifiers correspond to existing records and are within expected formats, although this alone does not resolve the core authorization flaw. Regular security audits focusing on business logic vulnerabilities will help prevent similar issues in future development cycles.