CVE-2026-57570 backpack/crud: HasMany/MorphMany relation fields allow cross-tenant record re-parenting (IDOR) via attachManyRelation
Authenticated administrators can reassign or delete unrelated child records across tenant boundaries via insecure relation handling in Backpack CRUD.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-57570?
CVE-2026-57570 is a medium-severity missing authorization vulnerability in Laravel-Backpack CRUD, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
backpack/crud provides Create, Read, Update & Delete (CRUD) functions for Backpack, a collection of Laravel packages that help users build custom administration panels. From 6.0.0 until 6.8.15 and 7.0.47, HasMany and MorphMany handling through attachManyRelation during CRUD create and update operations accepts submitted child primary keys without consistently restricting updates to records belonging to the current parent or permitted by the developer-defined relation scope. An authenticated low-privilege administrator who can edit a parent form exposing an affected multiple-relation field can cause unrelated child records to be reassigned, detached, nulled, or deleted across ownership or tenant boundaries. Exploitation requires related records that should not be attachable or removable by that administrator and the absence of additional application-level authorization around submitted relation values. This issue is distinct from earlier direct main-entity CRUD scoping fixes because it affects secondary models modified by relationship-saving logic. This issue is fixed in versions 6.8.15 and 7.0.47.
Weakness: CWE-862
Which versions are affected by CVE-2026-57570?
4 open source packages ship an affected version, including backpack/crud.
| Package | Affected | Fixed in |
|---|---|---|
backpack/crud Packagist | From 6.0.0 | 6.8.15 |
backpack/crud Packagist | From 6.0.0 | 6.8.15 |
backpack/crud Packagist | From 7.0.0 | 7.0.47 |
backpack/crud Packagist | From 7.0.0 | 7.0.47 |
How do I fix CVE-2026-57570?
Upgrade backpack/crud to a fixed version for your release line: 6.8.15 or 7.0.47.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-57570 being exploited?
There is no known exploitation of CVE-2026-57570 in the wild and no public exploit code.
Sources
Also known as GHSA-42vx-43vc-x6pr.