backpack/crud: HasUploadFields keeps the attacker-supplied file extension — public-disk uploads of `shell.php` reach the webserver

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-54177
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-14 18:17:52 UTC
Updated2026-09-14 18:17:52 UTC
Descriptionbackpack/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 6.8.14 and 7.0.38, HasUploadFields methods uploadFileToDisk and uploadMultipleFilesToDisk, used through CrudTrait, and the withFiles() path through FileNameGenerator do not internally reject server-executable file types. An authenticated administrator can achieve remote code execution by using an upload-enabled CRUD field without mimes: and mimetypes: validation when the public disk is web-accessible through php artisan storage:link and the web-server and PHP-FPM configuration executes the stored extension. The legacy path preserves an accepted extension and the newer path derives an extension without blocking dangerous types. The package-level restriction is defense in depth and does not replace application-level upload validation. This issue is fixed in versions 6.8.14 and 7.0.38.

Risk And Classification

Primary CVSS: v3.1 6.6 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-434 | CWE-434 CWE-434: Unrestricted Upload of File with Dangerous Type

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.6MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED6.6MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Laravel-Backpack CRUD affected >= 6.0.0, < 6.8.14 Not specified
CNA Laravel-Backpack CRUD affected >= 7.0.0, < 7.0.38 Not specified

References

ReferenceSourceLinkTags
github.com/Laravel-Backpack/CRUD/pull/5994 [email protected] github.com
github.com/Laravel-Backpack/CRUD/commit/76c3a6e50e3fbd6d5f633208da5b04ac... [email protected] github.com
github.com/Laravel-Backpack/CRUD/releases/tag/7.0.38 [email protected] github.com
github.com/Laravel-Backpack/CRUD/security/advisories/GHSA-8q2w-pv9p-mjvc [email protected] github.com
github.com/Laravel-Backpack/CRUD/commit/5c5de0af242619d0653c7c70c900cd15... [email protected] github.com
github.com/Laravel-Backpack/CRUD/pull/5993 [email protected] github.com
github.com/Laravel-Backpack/CRUD/releases/tag/6.8.14 [email protected] github.com
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