CVE-2026-55381 Missing authorization in InvoiceShelf
Authenticated users can read and modify other companies' estimates due to missing authorization checks during invoice conversion.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-55381?
CVE-2026-55381 is a high-severity missing authorization vulnerability in InvoiceShelf, published on 14 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
InvoiceShelf is an open-source web & mobile app that helps track expenses, payments and create professional invoices and estimates. Prior to version 2.4.0, POST /api/v1/estimates/{estimate}/convert-to-invoice in ConvertEstimateController authorizes only the caller's create-invoice ability and does not authorize access to the route-bound Estimate. Because route-model binding can resolve an estimate from any company, an authenticated user with create-invoice ability can copy another company's line items, prices, totals, taxes, notes, currency, and customer data into an invoice in the attacker's company. The victim company's configured conversion action reaches checkForEstimateConvertAction and can also change or delete the original estimate. This issue is fixed in version 2.4.0.
Weakness: CWE-639
Which versions are affected by CVE-2026-55381?
How do I fix CVE-2026-55381?
No fix has been published for CVE-2026-55381 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-55381 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55381 exists.
Sources
Also known as GHSA-j2vg-rxqr-5vc9.