CVE-2026-9227

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Source

https://cve.org/CVERecord?id=CVE-2026-9227

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-9227.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-9227

Published

2026-05-28T06:45:39.874Z

Modified

2026-08-04T11:50:36.621974939Z

Severity

8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

GutenBee <= 2.20.1 - Authenticated (Author+) Arbitrary File Upload via wp_check_filetype_and_ext Filter

Details

The GutenBee – Gutenberg Blocks plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.20.1 via the gutenbeefileandextjson function. This is due to a flawed strpos() substring check that only verifies whether the filename contains the string '.json' rather than confirming the filename ends with a .json extension, allowing double-extension filenames like shell.json.php to bypass validation. This makes it possible for authenticated attackers, with author-level access and above, to upload files that may be executable, which makes remote code execution possible.

Database specific

{
    "cwe_ids": [
        "CWE-434"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/9xxx/CVE-2026-9227.json",
    "cna_assigner": "Wordfence"
}

References

Affected packages

Git / github.com/cssigniter/gutenbee

Affected ranges

Type

GIT

Repo

https://github.com/cssigniter/gutenbee

Events

Introduced

Last affected

e3fbb39859669613b3e0463c5972eb8d422ae3af

Database specific

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.20.1"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

2.*

2.10.0

2.10.1

2.10.2

2.10.3

2.10.4

2.10.5

2.10.6

2.11.0

2.11.1

2.12.0

2.12.1

2.12.2

2.12.3

2.12.4

2.12.5

2.13.0

2.13.1

2.14.0

2.15.0

2.16.0

2.16.1

2.17.0

2.17.1

2.17.2

2.17.3

2.17.4

2.18.0

2.18.1

2.19.0

2.19.1

2.20.0

2.20.1

2.8.0

2.8.1

2.9.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-9227.json"