CVE-2026-63223: CodeIgniter: Uploaded file extension validation bypass in `is_image` and `mime_in` rules

critical Affects codeigniter4/framework. Feed 2026.10.29.1, updated 2026-10-28; published 2026-08-07.

CodeIgniter: Uploaded file extension validation bypass in `is_image` and `mime_in` rules

Package: codeigniter4/framework Composer
Affected versions: <4.7.4
Fixed in: 4.7.4
Severity: critical CVSS 9.8
Exploitation: not on CISA KEV · EPSS 1% (56.4th percentile)
Published: 2026-08-07
Source: osv.dev

References

NVD record codeigniter4/framework advisories

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