Spatie Laravel Media Library contains a file upload restriction bypass
Spatie Laravel Media Library before version 11.23.0 contains a file upload restriction bypass in FileAdder::defaultSanitizer(). The sanitizer checks only the final filename suffix, allowing double-extension filenames such as shell.php.jpg to bypass the blocklist, with pathinfo() preserving inner .php stems in saved filenames. The blocklist also omits executable extensions including .php6, .shtml, and .htaccess. The double-extension bypass requires a legacy Apache AddHandler configuration to achieve PHP execution; the incomplete blocklist bypass does not.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | spatie/laravel-medialibrary | < 11.23.0 | 11.23.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-48557
- https://github.com/spatie/laravel-medialibrary/pull/3939
- https://github.com/spatie/laravel-medialibrary/commit/608ea03703d3887c46434f5dda6af56de6346aba
- https://github.com/spatie/laravel-medialibrary
- https://github.com/spatie/laravel-medialibrary/releases/tag/11.23.0
- https://www.vulncheck.com/advisories/spatie-laravel-media-library-file-upload-restriction-bypass-via-fileadder-php
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-184- Platform
- Composer
- Package
spatie/laravel-medialibrary- Disclosed
- 29.05.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-3ggm-c5m7-hfv5 - CC BY 4.0
Vulnerability history: spatie/laravel-medialibrary
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 05.2026 05.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 1
Disclosures per year
- 2026: 2
-
Spatie Laravel Media Library contains a file upload restriction bypass this entry
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