CVE-2026-3335— WordPress plugin Canto 安全漏洞
公开利用映射 1
Nuclei · 1 CVE-2026-3335.yaml [template]
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一、 漏洞 CVE-2026-3335 基础信息
漏洞信息
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Vulnerability Title
Canto <= 3.1.1 - Missing Authorization to Unauthenticated File Upload
来源: CVE Program / CVE List V5
Vulnerability Description
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.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
来源: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Canto 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Canto 3.1.1及之前版本存在安全漏洞，该漏洞源于缺少身份验证、授权和随机数检查，可能导致未经授权的文件上传。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| flightbycanto | Canto | * ~ 3.1.1 | - |
二、漏洞 CVE-2026-3335 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|---|---|---|
| 1 | The Canto plugin for WordPress is vulnerable to missing authorization in the copy-media.php upload flow. The file is directly accessible and accepts attacker-controlled parameters for the upload destination, allowing unauthenticated users to upload arbitrary files constrained to WordPress-allowed MIME types. The fbc_app_api parameter controls the domain WordPress fetches from via wp_safe_remote_get, enabling SSRF to attacker-controlled infrastructure. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-3335.yaml | POC详情 |
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CVE-2026-3335 补丁与修复 (6)
CVE-2026-3335 厂商安全公告 (1)
IV. Related Vulnerabilities
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