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CVE-2026-25758 is a critical insecure direct object reference vulnerability in Spree Commerce affecting the guest checkout flow. The flaw allows an unauthenticated guest user to manipulate address identifier parameters during checkout and bind an arbitrary guest address record to their own order. Existing ownership validation checks can be bypassed, so the application fails to ensure that the referenced address belongs to the current guest session or order. As a result, guest checkout transactions can expose other guests’ personally identifiable information associated with those address records, including names, physical addresses, and phone numbers. Fixed releases include 4.10.3, 5.0.8, 5.1.10, 5.2.7, and 5.3.2.
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Cross-references every affected SKU, including bundled OEM variants.
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