{"id":"CVE-2026-82029","published":"2026-11-04T19:17:41.360","lastModified":"2026-11-04T19:17:41.360","description":"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.","cvssScore":6.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cwes":["CWE-639","CWE-862"],"vendors":[],"products":[],"references":[{"url":"https://github.com/invoiceninja/invoiceninja/commit/4895dce820e37b849b34af46548afd8520bb81d1","tags":[]},{"url":"https://github.com/invoiceninja/invoiceninja/releases/tag/v5.13.28","tags":[]},{"url":"https://www.vulncheck.com/advisories/invoice-ninja-broken-access-control-via-vendor-portal","tags":[]}],"exploitRefs":[{"url":"https://github.com/invoiceninja/invoiceninja/commit/4895dce820e37b849b34af46548afd8520bb81d1","tags":[]},{"url":"https://github.com/invoiceninja/invoiceninja/releases/tag/v5.13.28","tags":[]}],"hasPoc":true,"ai":null}