CVE-2026-63223

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Source
https://cve.org/CVERecord?id=CVE-2026-63223
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63223.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-63223
Aliases
Downstream
Published
2026-07-31T04:10:28Z
Modified
2026-10-21T02:58:55Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
CodeIgniter: Uploaded file extension validation bypass in is_image and mime_in rules
Details

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 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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-434"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63223.json"
}
References

Affected packages

Git / github.com/codeigniter4/codeigniter4

Affected ranges

Type
GIT
Repo
https://github.com/codeigniter4/codeigniter4
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
2bd0f01d2813f9ec06db42643ce39d9f5428bf6d
Fixed
b6e9a4fa1dca2df3d3f261bdf61532df8c6420aa
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "4.7.4"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "b6e9a4fa1dca2df3d3f261bdf61532df8c6420aa"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v4.7.4",
            "range":  [
                {
                    "fixed":  "2bd0f01d2813f9ec06db42643ce39d9f5428bf6d"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

4.*
4.0.0
v4.*
v4.0.0-alpha.1
v4.0.0-alpha.3
v4.0.0-alpha.4
v4.0.0-alpha.5
v4.0.0-beta.1
v4.0.0-beta.3
v4.0.0-beta.4
v4.0.0-rc.1
v4.0.0-rc.2
v4.0.0-rc.2b
v4.0.0-rc.3
v4.0.0-rc.4
v4.0.0.0-alpha.5
v4.0.1
v4.0.3
v4.0.5
v4.1.0
v4.1.1
v4.1.2
v4.1.3
v4.1.4
v4.1.5
v4.1.6
v4.1.7
v4.1.8
v4.1.9
v4.2.0
v4.2.1
v4.2.10
v4.2.11
v4.2.12
v4.2.2
v4.2.3
v4.2.4
v4.2.5
v4.2.6
v4.2.7
v4.2.9
v4.3.0
v4.3.1
v4.3.2
v4.3.3
v4.3.4
v4.3.5
v4.3.6
v4.3.7
v4.3.8
v4.4.0
v4.4.1
v4.4.2
v4.4.3
v4.4.4
v4.4.5
v4.4.6
v4.4.7
v4.4.8
v4.5.0
v4.5.1
v4.5.2
v4.5.3
v4.5.4
v4.5.5
v4.5.6
v4.5.7
v4.5.8
v4.6.0
v4.6.1
v4.6.2
v4.6.3
v4.6.4
v4.6.5
v4.7.0
v4.7.1
v4.7.2
v4.7.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63223.json"