Vulnerability · Published Sep 14, 2026 · Assigned by GitHub_M
CVE-2026-57570backpack/crud: HasMany/MorphMany relation fields allow cross-tenant record re-parenting (IDOR) via attachManyRelation
Medium 6.5
In plain English
A medium-severity missing authorization in CRUD from Laravel-Backpack. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | backpack/crud | 7.0.47 | GHSA-42vx-43vc-x6pr |
| Packagist | backpack/crud | 6.8.15 | GHSA-42vx-43vc-x6pr |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Laravel-Backpack | CRUD | >= 6.0.0, < 6.8.15>= 7.0.0, < 7.0.47 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
References
- https://github.com/Laravel-Backpack/CRUD/security/advisories/GHSA-42vx-43vc-x6pr x_refsource_CONFIRM
- https://github.com/Laravel-Backpack/CRUD/pull/6021 x_refsource_MISC
- https://github.com/Laravel-Backpack/CRUD/pull/6022 x_refsource_MISC
- https://github.com/Laravel-Backpack/CRUD/commit/045ac00532aebbd2ddcad260ba86f980f000a800 x_refsource_MISC
- https://github.com/Laravel-Backpack/CRUD/commit/24cfd2f61f3b162c7bfd572368bc1b05c5f1fa75 x_refsource_MISC
- https://github.com/Laravel-Backpack/CRUD/releases/tag/6.8.15 x_refsource_MISC
- https://github.com/Laravel-Backpack/CRUD/releases/tag/7.0.47 x_refsource_MISC