CVE-2026-88894 in Snipe-IT
Summary
by MITRE • 09/10/2026
Snipe-IT's predefined kit checkout path does not enforce Full Multiple Company Support (FMCS) tenant isolation on the checkout target. Unlike the single, bulk, API, accessory, license and consumable checkout paths, App\Services\PredefinedKitCheckoutService never calls $item->canCheckoutTo($target); it only performs the actor-vs-item policy check and an availability check before persisting the checkout. With FMCS enabled, a non-superuser who belongs to at least two companies and holds the assets.checkout permission can POST to /kits/{kit}/checkout with a user_id belonging only to company B and have a company-A asset (and likewise kit licenses, consumables and accessories) assigned to that user, bypassing the company-mismatch check that blocks the same operation on every other checkout path. The issue is fixed in Snipe-IT 8.7.2; it was runtime-verified on v8.6.3 and code-inspected on v8.7.1, and the affected service has lacked the check since 2019, so earlier FMCS deployments are likely also affected.
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Analysis
by VulDB Data Team • 09/10/2026
The vulnerability identified in Snipe-IT represents a critical failure in access control enforcement within the application's predefined kit checkout functionality when Full Multiple Company Support is enabled. This flaw allows for unauthorized cross-company asset assignment, effectively bypassing tenant isolation mechanisms that are designed to segregate data and resources between distinct organizational entities. In environments where multiple companies share a single instance of Snipe-IT, strict adherence to company boundaries is essential for maintaining data privacy, compliance with regulations such as GDPR or HIPAA, and accurate inventory tracking per entity. The specific defect lies in the App\Services\PredefinedKitCheckoutService class, which handles the logic for checking out predefined kits containing assets, licenses, consumables, and accessories. Unlike other checkout paths within the application, this service fails to invoke the necessary authorization check that verifies whether the target user belongs to the same company as the item being checked out.
Technically, the root cause is a missing invocation of the $item->canCheckoutTo($target) method during the execution flow of predefined kit checkouts. In standard checkout operations for single assets, bulk assignments, API requests, accessories, licenses, and consumables, this method serves as a gatekeeper that validates tenant alignment between the actor performing the action, the item being transferred, and the target recipient. However, in the predefined kit checkout path, the service only performs an actor-versus-item policy check to ensure the user has permission to perform the checkout operation on the specific items within the kit. It also verifies asset availability but omits the critical tenant isolation validation. This omission means that if a non-superuser possesses the assets.checkout permission and belongs to at least two companies, they can manipulate the request payload by specifying a user_id associated with a different company than the one owning the assets in the kit. The system will then persist this checkout operation without raising an error or rejecting the transaction due to the mismatched tenant context.
The operational impact of this vulnerability is significant for organizations relying on Snipe-IT for multi-tenant asset management. An attacker exploiting this flaw can assign company-A owned hardware, software licenses, or consumables to a user belonging exclusively to company-B. This leads to inaccurate inventory records where assets are no longer correctly attributed to their owning entity, complicating financial reporting and audit trails. Furthermore, it creates potential security risks if sensitive equipment or licensed software is inadvertently made accessible to users outside its authorized scope. For example, high-value hardware might be assigned to a user in a subsidiary that does not have the legal right to possess such assets, leading to compliance violations. Similarly, access to proprietary licenses could be granted to unauthorized personnel, resulting in potential intellectual property exposure or licensing audit failures. The vulnerability has existed since 2019, meaning any deployment of Snipe-IT prior to version 8.7.2 with FMCS enabled is potentially susceptible to this bypass.
This issue aligns with CWE-269, Improper Privilege Management, as it involves a failure in enforcing proper access control levels relative to the organizational structure. It also relates closely to CWE-1004, Sensitive Data Without Proper Protection, because the flaw allows data belonging to one tenant to be exposed or transferred to another unauthorized tenant within the same system instance. From an ATT&CK perspective, this vulnerability facilitates lateral movement and privilege escalation across logical boundaries, allowing an actor to expand their influence beyond their designated scope by misappropriating resources from other tenants. The lack of enforcement on a specific API endpoint creates a blind spot in the application's security model that can be exploited through standard HTTP POST requests without requiring elevated privileges or complex exploitation techniques.
To mitigate this vulnerability, organizations must immediately upgrade Snipe-IT to version 8.7.2 or later, where the predefined kit checkout service has been patched to include the missing tenant isolation checks. For environments unable to patch immediately due to operational constraints, temporary mitigations should focus on restricting access to the predefined kit checkout functionality. Administrators can revoke the assets.checkout permission for users who belong to multiple companies until the upgrade is performed. Additionally, implementing strict input validation and monitoring logs for unusual patterns of cross-company asset assignments can help detect potential exploitation attempts. Regular audits of inventory records across different company tenants are also recommended to identify any discrepancies that may have resulted from prior exploitation of this flaw. Ensuring that all checkout paths consistently enforce tenant isolation checks is crucial for maintaining the integrity of multi-tenant deployments and preventing unauthorized data leakage between organizational boundaries.