EUVD-2026-33439
GHSA-3ggm-c5m7-hfv5
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
4DescriptionNVD
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.
AnalysisAI
File upload restriction bypass in Spatie Laravel Media Library prior to 11.23.0 allows authenticated remote attackers to upload files with double extensions (e.g., shell.php.jpg) or executable extensions missing from the blocklist (.php6, .shtml, .htaccess) due to a flawed sanitizer in FileAdder::defaultSanitizer() that only inspects the final filename suffix. Successful exploitation can lead to arbitrary PHP code execution when the application is deployed behind a legacy Apache AddHandler configuration, with no public exploit identified at time of analysis. …
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RemediationAI
Within 24 hours: Audit all applications using Spatie Laravel Media Library and document current versions in inventory; identify production and staging systems. Within 7 days: Deploy Spatie Laravel Media Library update to version 11.23.0 or later across all environments using your standard change management process. …
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