Bug 2567847 (CVE-2026-82029)

Summary: CVE-2026-82029 invoiceninja/invoiceninja: Invoice Ninja: Unauthorized document access via improper vendor portal authorization
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Invoice Ninja. An authenticated vendor portal user can gain unauthorized access to documents belonging to other vendors and clients due to improper authorization checks that only validate company-level scope rather than specific vendor ownership. By supplying or enumerating predictable document identifiers on download endpoints, an attacker can access and download sensitive files across the organization, including invoices, contracts, payment receipts, and expense attachments.
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Description OSIDB Bzimport 2026-11-05 22:30:51 UTC
Invoice Ninja before 5.13.28 contains a broken access control vulnerability that allows authenticated vendor-portal contacts to access documents belonging to other vendors and clients by exploiting authorization checks that validate only company_id scope instead of vendor ownership. Attackers can request GET /vendor/documents/{hashid}/download or POST /vendor/documents/download_multiple, enumerating predictable sequential Hashids document identifiers due to a default empty HASH_SALT, to read any invoice PDFs, contracts, payment receipts, and expense attachments within the company.