Vulnerability · Published Sep 14, 2026 · Assigned by GitHub_M

CVE-2026-54177backpack/crud: HasUploadFields keeps the attacker-supplied file extension — public-disk uploads of `shell.php` reach the webserver

Medium 6.6

In plain English

A medium-severity unrestricted file upload 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 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.6Medium

Exploit odds (30 days)0.9%top 39.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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 6.8.14 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	backpack/crud	6.8.14	GHSA-8q2w-pv9p-mjvc
Packagist	backpack/crud	7.0.38	GHSA-8q2w-pv9p-mjvc

Affected products (as reported)

Vendor	Product	Versions
Laravel-Backpack	CRUD	>= 6.0.0, < 6.8.14>= 7.0.0, < 7.0.38

Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/Laravel-Backpack/CRUD/security/advisories/GHSA-8q2w-pv9p-mjvc x_refsource_CONFIRM
https://github.com/Laravel-Backpack/CRUD/pull/5993 x_refsource_MISC
https://github.com/Laravel-Backpack/CRUD/pull/5994 x_refsource_MISC
https://github.com/Laravel-Backpack/CRUD/commit/5c5de0af242619d0653c7c70c900cd15b1a197c5 x_refsource_MISC
https://github.com/Laravel-Backpack/CRUD/commit/76c3a6e50e3fbd6d5f633208da5b04acb8322969 x_refsource_MISC
https://github.com/Laravel-Backpack/CRUD/releases/tag/6.8.14 x_refsource_MISC
https://github.com/Laravel-Backpack/CRUD/releases/tag/7.0.38 x_refsource_MISC