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。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是一个应用插件。 WordPress plugin Keep Backup Daily 2.1.0版本及之前版本存在路径遍历漏洞，该漏洞源于将路径名不正确地限制在受限目录中，导致路径遍历漏洞。
WordPress plugin Keep Backup Daily 路径遍历漏洞
PoC
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https://www.sentinelone.com/vulnerability-database/cve-2026-3339/
https://www.wordfence.com/threat-intel/vulnerabilities/wordpress-plugins/keep-backup-daily/keep-backup-daily-211-authenticated-admin-limited-path-traversal-via-kbd-path-parameter
https://patchstack.com/database/wordpress/plugin/keep-backup-daily/vulnerability/wordpress-keep-backup-daily-plugin-2-1-1-authenticated-admin-limited-path-traversal-via-kbd-path-parameter-vulnerability
https://github.com/advisories/GHSA-fxxv-5hv8-hp3c
https://freshysites.com/security-bulletins/wordpress-security-bulletin-keep-backup-daily-plugin-vulnerability-cve-2026-3339/
https://avd.aliyun.com/detail?id=AVD-2025-26779
https://www.knowsafe.com/ti/info/0/993510
https://nvd.nist.gov/vuln/detail/CVE-2025-26779
https://managed-wp.com/zh_hk/blogs/mitigating-path-traversal-in-backup-plugin-cve20263339-2026-03-22/
https://wp-firewall.com/zh_tw/mitigating-path-traversal-in-backup-plugin-published-on-2026-03-22-cve-2026-3339-2/