CVE-2026-49344 Mercator has a Personal Identifiable Information Leak from Query Executor feature
An authenticated user can bypass authorization checks in the Query Engine to read sensitive user data, including password hashes, via crafted JSON queries.
- 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-2026-49344?
CVE-2026-49344 is a high-severity missing authorization vulnerability in sourcentis mercator, published on 19 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Mercator is an open source web application that enables mapping of the information system. Prior to version 2025.05.19, Mercator's Query Engine (`/admin/queries/execute`) accepts a JSON DSL (`from` / `select` / `filters` / `traverse` / `output`), translates it into an Eloquent query, and returns results as JSON. The controller method `QueryController::execute()` does not enforce an authorization gate, unlike `store()` and `massDestroy()` in the same controller which are correctly protected. As a result, any authenticated account — including the read-only Auditor role — can query models beyond its intended scope, including the `User` model. Additionally, the `password` column, although declared `$hidden`, is not excluded from filter predicates, which allows it to be used in `LIKE` conditions. The `schema()` and `schemaModel()` endpoints of the same controller are similarly unguarded. The Query Engine is read-only; integrity and availability are not affected. Version 2025.05.19 patches the issue.
Weakness: CWE-359
Which versions are affected by CVE-2026-49344?
How do I fix CVE-2026-49344?
No fix has been published for CVE-2026-49344 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-2026-49344 being exploited?
There is no known exploitation of CVE-2026-49344 in the wild and no public exploit code.