{"id":"CVE-2026-55610","summary":"InvoiceShelf has cross-company user read/update IDOR that enables cross-tenant account takeover","details":"InvoiceShelf is an open-source web & mobile app that helps track expenses, payments and create professional invoices and estimates. Prior to version 2.4.1, in InvoiceShelf's multi-company installations, any user who is an Owner of one company can read and overwrite any user account in any other company on the same installation. `GET/PUT /api/v1/users/{user}` resolves the target `User` by global primary key, and `UserPolicy` checks only that the requester owns their own header-company — it never verifies that the target user belongs to that company. This allows cross-tenant disclosure of user data and full account takeover (email/password overwrite + company re-assignment). Version 2.4.1 fixes the issue.","aliases":["GHSA-vgx6-6cqr-m8qr"],"modified":"2026-09-25T03:30:31.033586959Z","published":"2026-09-23T14:38:07.581Z","database_specific":{"cwe_ids":["CWE-639"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55610.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55610.json"},{"type":"ADVISORY","url":"https://github.com/InvoiceShelf/InvoiceShelf/security/advisories/GHSA-vgx6-6cqr-m8qr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55610"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/invoiceshelf/invoiceshelf","events":[{"introduced":"0"},{"fixed":"cc21c7d4e5626d7d8ee153a7448e0cbe16964c71"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0"},{"fixed":"2.4.1"}]}}],"versions":["2.4.0","2.3.3","2.3.2","2.3.1","2.3.0","2.2.1","2.2.0","2.1.1","2.1.0","2.1.0-RC1","2.0.0","2.0.0-RC1","1.3.0","1.2.2","1.2.1","1.2.0","1.1.0","1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55610.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N"}]}