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CVE-2016-20100: Memphis Documents Library WordPress Plugin < 3.1.6 Path Traversal via mdocs-img-preview

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-20 · updated 2026-10-23
• Weakness: CWE-22

Description

Memphis Documents Library plugin for WordPress before 3.1.6 contains a path traversal vulnerability that allows unauthenticated attackers to read arbitrary files via the mdocs-img-preview parameter. Attackers can send GET requests with traversal sequences to mdocs_img_preview() in mdocs-downloads.php to download wp-config.php containing database credentials. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-22.

Affected products

• Ian Howatson Memphis Documents Library: from 2.2.1 before 3.1.6 — fixed in 3.1.6

How to fix

Upgrade to a fixed version: Ian Howatson Memphis Documents Library 3.1.6. Check the vendor advisory for mitigations.

References

• https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/wordpress/wp-memphis-documents-library-lfi.yaml
• https://packetstorm.news/files/id/136374/
• https://wordpress.org/plugins/memphis-documents-library/
• https://wpscan.com/vulnerability/53999c06-05ca-44f1-b713-1e4d6b4a3f9f
• https://www.exploit-db.com/exploits/39593
• https://www.vulncheck.com/advisories/memphis-documents-library-wordpress-plugin-3.1.6-path-traversal-via-mdocs-img-preview

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