Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-55610?
CVE-2026-55610 is a vulnerability with a CVSS score of 8.7 (HIGH). 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 installation...
How severe is CVE-2026-55610?
CVE-2026-55610 has been rated HIGH with a CVSS base score of 8.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-55610?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.