CVE-2026-54177— backpack/crud: HasUploadFields keeps the attacker-supplied file extension — public-disk uploads of `shell.php` reach the webserver
Quick assessment
Affected
Laravel-Backpack CRUD
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
backpack/crud 为 Backpack 提供增删改查（CRUD）功能，Backpack 是一套用于帮助用户构建自定义管理面板的 Laravel 包集合。从 6.0.0 到 6.8.14 以及 7.0.38 版本中，通过 CrudTrait 调用的 HasUploadFields 方法 和 ，以及通过 的 路径，均未在内部拒绝可被服务器执行的类型。 当公共磁盘（public disk）可通过 实现 Web 访问，且 Web 服务器与 PHP-FPM 配置能够执行所存储文件的扩展名时，拥有上传功能的 CRUD
Possible ATT&CK Techniques 3 AI
T1059 · Command and Scripting Interpreter T1091 · Replication Through Removable Media T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Laravel-Backpack | CRUD | >= 6.0.0, < 6.8.14 |
affected |
>= 7.0.0, < 7.0.38 |
affected |
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I. Basic Information for CVE-2026-54177
Vulnerability Information
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Vulnerability Title
backpack/crud: HasUploadFields keeps the attacker-supplied file extension — public-disk uploads of `shell.php` reach the webserver
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Laravel-Backpack | CRUD | >= 6.0.0, < 6.8.14 | - |
|
II. Public POCs for CVE-2026-54177
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-54177 (4)
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🔗 fixes by pxpm · Pull Request #5994 · Laravel-Backpack/CRUD x_refsource_MISC
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Vendor Advisories for CVE-2026-54177 (1)
Vendor Pages for CVE-2026-54177 (2)
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🔗 Release 7.0.38 🌈 · Laravel-Backpack/CRUD · GitHub x_refsource_MISC
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🔗 Release 6.8.14 🌈 · Laravel-Backpack/CRUD · GitHub x_refsource_MISC
Same Patch Batch · Laravel-Backpack · 2026-09-14 · 8 CVEs total
| CVE-2026-54178 | 8.1 HIGH | backpack/crud: Arbitrary file deletion via attacker-controlled clear_<attr>[] in HasUpload |
| CVE-2026-54182 | 8.1 HIGH | backpack/crud: OS command injection in Stats::makeCurlRequest via attacker-controlled Host |
| CVE-2026-54175 | 7.6 HIGH | backpack/crud: Unverified password change in MyAccountController via mass assignment |
| CVE-2026-54180 | 7.6 HIGH | backpack/crud: CRUD panel query scopes are not enforced on Update, Delete, and Reorder (cr |
| CVE-2026-54176 | 6.5 MEDIUM | backpack/crud: MyAccountController allows changing the login email without a current-passw |
| CVE-2026-57570 | 6.5 MEDIUM | backpack/crud: HasMany/MorphMany relation fields allow cross-tenant record re-parenting (I |
| CVE-2026-54181 | 5.4 MEDIUM | backpack/crud: Stored XSS in the color column — the `@if($column['escaped'])` branches are |
IV. Related Vulnerabilities
Same product: CRUD
-
CVE-2026-54181
backpack/crud: Stored XSS in the color column — the `@if($co -
CVE-2026-54176
backpack/crud: MyAccountController allows changing the login -
CVE-2026-54180
backpack/crud: CRUD panel query scopes are not enforced on U -
CVE-2026-57570
backpack/crud: HasMany/MorphMany relation fields allow cross -
CVE-2026-54178
backpack/crud: Arbitrary file deletion via attacker-controll
Same vendor: Laravel-Backpack
-
CVE-2026-54181
backpack/crud: Stored XSS in the color column — the `@if($co -
CVE-2026-54176
backpack/crud: MyAccountController allows changing the login -
CVE-2026-54180
backpack/crud: CRUD panel query scopes are not enforced on U -
CVE-2026-57570
backpack/crud: HasMany/MorphMany relation fields allow cross -
CVE-2026-54178
backpack/crud: Arbitrary file deletion via attacker-controll
V. Comments for CVE-2026-54177
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