CVE-2026-3339— Keep Backup Daily <= 2.1.1 - Authenticated (Admin+) Limited Path Traversal via 'kbd_path' Parameter
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I. Basic Information for CVE-2026-3339
Vulnerability Information
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Vulnerability Title
Keep Backup Daily <= 2.1.1 - Authenticated (Admin+) Limited Path Traversal via 'kbd_path' Parameter
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Keep Backup Daily plugin for WordPress is vulnerable to Limited Path Traversal in all versions up to, and including, 2.1.1 via the `kbd_open_upload_dir` AJAX action. This is due to insufficient validation of the `kbd_path` parameter, which is only sanitized with `sanitize_text_field()` - a function that does not strip path traversal sequences. This makes it possible for authenticated attackers, with Administrator-level access and above, to list the contents of arbitrary directories on the server outside of the intended uploads directory.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin Keep Backup Daily 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
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 Keep Backup Daily 2.1.1及之前版本存在路径遍历漏洞，该漏洞源于参数验证不足，可能导致受限路径遍历攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| fahadmahmood | Keep Backup Daily | * ~ 2.1.1 | - |
II. Public POCs for CVE-2026-3339
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · fahadmahmood · 2026-03-20 · 3 CVEs total
| CVE-2026-3368 | 7.2 HIGH | Injection Guard <= 1.2.9 - Unauthenticated Stored Cross-Site Scripting via Query Parameter |
| CVE-2026-3577 | 4.4 MEDIUM | Keep Backup Daily <= 2.1.2 - Authenticated (Admin+) Stored Cross-Site Scripting via Backup |
IV. Related Vulnerabilities
Same product: Keep Backup Daily
Same vendor: fahadmahmood
- CVE-2026-3878
WP Docs <= 2.2.9 - Authenticated (Subscriber+) Stored Cross- - CVE-2026-3368
Injection Guard <= 1.2.9 - Unauthenticated Stored Cross-Site - CVE-2026-3577
Keep Backup Daily <= 2.1.2 - Authenticated (Admin+) Stored C - CVE-2025-12075
Order Splitter for WooCommerce <= 5.3.5 - Missing Authorizat - CVE-2025-12682
Easy Upload Files During Checkout <= 2.9.8 - Unauthenticated
Same weakness: CWE-22
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npitre cramfs-tools Directory cramfsck.c do_directory path t - CVE-2022-50956
WordPress Plugin amministrazione-aperta 3.7.3 Local File Rea - CVE-2026-8215
Industrial Application Software IAS Canias ERP RMI iasReques - CVE-2026-42605
AzuraCast: Path Traversal in `currentDirectory` Parameter En - CVE-2026-42574
apko dirFS has a symlink-following path traversal that allow
V. Comments for CVE-2026-3339
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