CVE-2026-92462 in yshop-crm
Summary
by MITRE • 09/16/2026
yshop-crm through 2.1.3 fails to enforce authorization checks on the CrmFlowController deleteFlowStep endpoint, allowing any authenticated back-office user to delete arbitrary approval workflow steps. Attackers can invoke the DELETE /admin-api/crm/flow/delete-step endpoint without required permissions to remove approval steps that control contract, receivable, and invoice finalization processes.
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Analysis
by VulDB Data Team • 09/16/2026
The vulnerability identified in yshop-crm versions through 2.1.3 represents a critical failure in access control mechanisms within the customer relationship management module. Specifically, the CrmFlowController component contains an endpoint designed to delete steps from approval workflows, which is intended for administrative use only. However, the implementation fails to verify whether the authenticated user possesses the necessary privileges to perform this action on specific workflow instances or types. This oversight allows any authenticated back-office user, regardless of their assigned role or permission level, to invoke the DELETE /admin-api/crm/flow/delete-step endpoint and remove arbitrary approval steps from active workflows.
From a technical perspective, this flaw is classified as an insecure direct object reference combined with broken access control. The server-side logic processes the request based on the presence of valid authentication credentials rather than validating authorization policies against the specific resource being modified. Consequently, low-privileged users can manipulate critical business process configurations by stripping away mandatory approval gates. This bypasses the intended security boundary that separates standard operational staff from system administrators or workflow designers who should be the only entities capable of altering approval chain structures.
The operational impact of this vulnerability is severe due to its direct effect on financial and contractual integrity. Approval workflows in yshop-crm are central to finalizing contracts, processing receivables, and approving invoices. By deleting specific steps from these chains, an attacker can effectively remove required approvals that serve as checks against fraud or error. For instance, removing a step that requires manager sign-off for large transactions allows unauthorized users to bypass financial controls. This can lead to the execution of fraudulent contracts, premature release of funds, or processing of unverified invoices without proper oversight, potentially resulting in significant financial loss and compliance violations.
This vulnerability aligns with CWE-269 Improper Privilege Management and CWE-862 Missing Authorization, as it involves a failure to enforce required permissions for sensitive actions. In the context of the MITRE ATT&CK framework, this behavior corresponds to T1078 Valid Accounts, where an attacker leverages legitimate credentials to perform unauthorized activities within the system environment. The ability to alter workflow configurations also touches upon potential impacts related to process manipulation and data integrity compromise, as it undermines the audit trail and control mechanisms designed into the business logic.
To mitigate this risk, immediate action is required to patch yshop-crm to version 2.1.4 or later where these authorization checks have been corrected. In the interim, administrators should enforce strict role-based access controls at the network or API gateway level if possible, restricting direct access to admin endpoints to only those IP addresses associated with trusted administrative workstations. Additionally, implementing comprehensive logging and monitoring for all calls to the delete-step endpoint can help detect anomalous activity indicative of exploitation attempts. Regular security audits focusing on authorization logic in backend controllers are recommended to prevent similar flaws from being introduced during future development cycles.