What’s Vulnerable › Vulnerabilities

CVE-2026-48557: Spatie Laravel Media Library < 11.23.0 File Upload Restriction Bypass via FileAdder.php

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-29 · updated 2026-10-08
• Weakness: CWE-184

Description

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 products

• spatie laravel-medialibrary: before 11.23.0 — fixed in 11.23.0

How to fix

Upgrade to a fixed version: spatie laravel-medialibrary 11.23.0. Check the vendor advisory for mitigations.

References

• https://github.com/spatie/laravel-medialibrary/commit/608ea03703d3887c46434f5dda6af56de6346aba
• https://github.com/spatie/laravel-medialibrary/pull/3939
• 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

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