CVE-2026-48557

High

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.

SeverityHigh

CVSS8.8

Exploit probability—

ProductSpatie/laravel-medialibrary

PublishedMay 29, 2026

First seenMay 29, 2026

Weakness typeCWE-184CWE-184

How to fix

Update

spatie/laravel-medialibrary11.23.0 or later

Patches

github.com/spatie/laravel-medialibrary/commit/608ea03703d3887c46434f5dda6af56de6346aba

Vendor advisories

github.com/spatie/laravel-medialibrary/releases/tag/11.23.0

Affected products

Product	Affected versions	Fixed in
spatie/laravel-medialibraryPackagist	v < 11.23.0	11.23.0

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