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Vulnerabilities

CVE-2026-3335

Medium
The Canto plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.1.1 via the `/wp-content/plugins/canto/includes/lib/copy-media.php` file. This is due to t
CWE-862 — Weakness Type
Published: Mar 21, 2026  ·  Modified: Mar 23, 2026  ·  Source: NVD
CVSS v3
5.3
🔗 NVD Official
📄 Description (English)

The Canto plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.1.1 via the `/wp-content/plugins/canto/includes/lib/copy-media.php` file. This is due to the file being directly accessible without any authentication, authorization, or nonce checks, and the `fbc_flight_domain` and `fbc_app_api` URL components being accepted as user-supplied POST parameters rather than read from admin-configured options. Since the attacker controls both the destination server and the `fbc_app_token` value, the entire fetch-and-upload chain is attacker-controlled — the server never contacts Canto's legitimate API, and the uploaded file originates entirely from the attacker's infrastructure. This makes it possible for unauthenticated attackers to upload arbitrary files (constrained to WordPress-allowed MIME types) to the WordPress uploads directory. Additional endpoints (`detail.php`, `download.php`, `get.php`, `tree.php`) are also directly accessible without authentication and make requests using a user-supplied `app_api` parameter combined with an admin-configured subdomain.

🤖 AI Executive Summary

The Canto plugin for WordPress versions up to 3.1.1 contains a missing authorization vulnerability in the copy-media.php file that allows unauthenticated attackers to upload arbitrary files. Attackers can bypass authentication by directly accessing the vulnerable endpoint and supplying malicious parameters, enabling unauthorized file uploads to the WordPress installation.

📄 Description (Arabic)

ثغرة في إضافة Canto لـ WordPress تسمح للمهاجمين غير المصرح لهم بتحميل ملفات تعسفية إلى دليل التحميلات. الملف copy-media.php يمكن الوصول إليه مباشرة دون فحوصات المصادقة أو التفويض أو التحقق من nonce. يتحكم المهاجم بخادم الوجهة وقيمة الرمز، مما يجعل سلسلة الجلب والتحميل بالكامل تحت سيطرة المهاجم.

🤖 ملخص تنفيذي (AI)

The Canto WordPress plugin up to version 3.1.1 has a missing authorization flaw in copy-media.php allowing unauthenticated file uploads. Attackers can directly access the vulnerable endpoint without authentication and upload arbitrary files to WordPress installations by controlling server parameters.

🤖 AI Intelligence Analysis Analyzed: May 29, 2026 12:10
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
banking government healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.0
/ 10.0
🔧 Remediation Steps (English)
Update the Canto plugin to version 3.1.2 or later immediately. Implement proper authentication and authorization checks in the copy-media.php file. Restrict direct access to sensitive plugin files through web server configuration. Validate all user-supplied parameters against server-side admin configurations. Conduct a security audit of uploaded files and remove any suspicious uploads.
🔧 خطوات المعالجة (العربية)
قم بتحديث إضافة Canto إلى الإصدار 3.1.2 أو أحدث فوراً. طبق فحوصات المصادقة والتفويض الصحيحة في ملف copy-media.php. قيد الوصول المباشر إلى ملفات الإضافة الحساسة من خلال إعدادات خادم الويب. تحقق من جميع المعاملات المزودة من قبل المستخدم مقابل إعدادات المسؤول على جانب الخادم. أجرِ تدقيقاً أمنياً للملفات المرفوعة وأزل أي ملفات مريبة.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.9.2.1 A.9.2.5 A.14.2.1
🔵 SAMA CSF
AC-2 AC-3 SI-7
🟡 ISO 27001:2022
A.9.2.1 A.9.2.5 A.9.4.3
📊 CVSS Score
5.3
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityN — None / Network
IntegrityL — Low / Local
AvailabilityN — None / Network
📋 Quick Facts
Severity Medium
CVSS Score5.3
CWECWE-862
Exploit No
Patch ✗ No
Published 2026-03-21
Source Feed nvd
Views 4
🇸🇦 Saudi Risk Score
7.0
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-862
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