{"id":"CVE-2026-63223","title":"CodeIgniter is a PHP full-stack web framework","summary":"CodeIgniter is a PHP full-stack web framework. Prior to 4.7.4, the is_image and mime_in upload validation rules do not independently enforce a safe client filename extension, allowing a remote attacker to upload executable content when a…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-434"],"published":"2026-07-31","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:51:43.490","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63223","references":[{"url":"https://github.com/codeigniter4/CodeIgniter4/commit/b6e9a4fa1dca2df3d3f261bdf61532df8c6420aa","label":"security-advisories@github.com"},{"url":"https://github.com/codeigniter4/CodeIgniter4/releases/tag/v4.7.4","label":"security-advisories@github.com"},{"url":"https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-mmj4-63m4-r6h5","label":"security-advisories@github.com"}],"tags":["nvd","exploit-available"],"epss":0.00759,"epssPercentile":0.53321,"exploits":{"github":2,"githubRepos":["https://github.com/imbas007/CVE-2026-63223-POC","https://github.com/shinthink/CVE-2026-63223"],"checkedAt":"2026-09-21T15:29:58.838Z"},"exploitAvailable":true,"ingestedAt":"2026-08-01T23:16:02.115Z","slug":"CVE-2026-63223","body":"## Overview\n\nCodeIgniter is a PHP full-stack web framework. Prior to 4.7.4, the is_image and mime_in upload validation rules do not independently enforce a safe client filename extension, allowing a remote attacker to upload executable content when an application preserves the client filename and stores uploads in a web-accessible script-enabled directory. Applications are impacted when they validate uploads using is_image or mime_in without an independent safe extension check (such as ext_in on patched versions), save uploaded files using the client-supplied filename, and place uploads in a web-accessible directory where PHP files can execute. This issue is fixed in version 4.7.4.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":66,"depthScoreParts":{"impact":53.9,"likelihood":0.2,"exploitation":12,"ransomware":0},"changes":[{"seq":5393,"id":"CVE-2026-63223","ts":1788887278809,"field":"exploit_available","old":"false","new":"true"},{"seq":4276,"id":"CVE-2026-63223","ts":1788886392847,"field":"exploit_available","old":"true","new":"false"},{"seq":3025,"id":"CVE-2026-63223","ts":1788883056465,"field":"exploit_available","old":"false","new":"true"},{"seq":2054,"id":"CVE-2026-63223","ts":1788882460958,"field":"exploit_available","old":"true","new":"false"},{"seq":1127,"id":"CVE-2026-63223","ts":1788881897755,"field":"exploit_available","old":"false","new":"true"}]}