CVE-2026-15158— Blocksy Companion 2.1.46 未授权任意文件上传漏洞
可能的 ATT&CK 技术 1AI
T1505.003 · Web Shell影响版本矩阵 1
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| creativethemeshq | Blocksy Companion | ≤ 2.1.46 | affected |
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一、 漏洞 CVE-2026-15158 基础信息
漏洞信息
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Vulnerability Title
Blocksy Companion <= 2.1.46 - Unauthenticated Arbitrary File Upload via 'blc-review-images[]' Parameter
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
The Blocksy Companion plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.1.46 via the save_attachments function. This is due to the Custom Fonts extension registering a wp_check_filetype_and_ext filter that approves any filename containing .woff2 or .ttf as a substring via strpos() rather than validating that those strings appear as the final extension via PATHINFO_EXTENSION — allowing double-extension filenames such as shell.woff2.php to pass MIME validation and be handled as permitted font files. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. This vulnerability is only exploitable when the premium version of the plugin (blocksy-companion-pro) is installed with both the WooCommerce Extra (Advanced Reviews) and Custom Fonts extensions active; the free blocksy-companion plugin does not contain the vulnerable code paths.
来源: 美国国家漏洞数据库 NVD
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
危险类型文件的不加限制上传
来源: 美国国家漏洞数据库 NVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| creativethemeshq | Blocksy Companion | 0 ~ 2.1.46 | - |
二、漏洞 CVE-2026-15158 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-15158 补丁与修复 (1)
CVE-2026-15158 厂商安全公告 (1)
IV. Related Vulnerabilities
Same product: Blocksy Companion
V. Comments for CVE-2026-15158
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