Link Library <= 7.8.8 - Authenticated (Contributor+) Arbitrary File Deletion

8.1
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE CVE-2026-40779
CVSS 8.1 (High)
Publicly Published April 22, 2026
Last Updated April 30, 2026
Researcher Trương Hữu Phúc (truonghuuphuc)

Description

The Link Library plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in all versions up to, and including, 7.8.8. This makes it possible for authenticated attackers, with Contributor-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php).

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Vulnerability Details for Link Library

Software Type Plugin
Software Slug link-library (view on wordpress.org)
Patched? Yes
Remediation Update to version 7.8.9, or a newer patched version
Affected Version
  • <= 7.8.8
Patched Version
  • 7.8.9

Recent vulnerabilities in Link Library

# Title CVE ID CVSS Researchers Date
1 Link Library <= 7.9.5 - Authenticated (Contributor+) Path Traversal CVE-2026-78394 4.3 Karthik Ramakrishnan September 23, 2026
2 Link Library <= 7.9.5 - Unauthenticated Server-Side Request Forgery CVE-2026-78397 7.2 Charles Vosburgh September 23, 2026
3 Link Library <= 7.9.5 - Reflected Cross-Site Scripting CVE-2026-78393 6.1 Karthik Ramakrishnan September 23, 2026
4 Link Library <= 7.9.4 - Unauthenticated Arbitrary File Deletion via link_url Parameter CVE-2026-18855 9.1 nudien August 14, 2026
5 Link Library <= 7.9.3 - Reflected Cross-Site Scripting CVE-2026-16535 6.1 João Ramos Maciel August 3, 2026
6 Link Library < 7.9.4 - Reflected Cross-Site Scripting CVE-2026-18197 6.1 Joshua Martinelle July 29, 2026
7 Link Library <= 7.9.2 - Unauthenticated SQL Injection CVE-2026-16532 7.5 Abdullah Kareem July 23, 2026
8 Link Library <= 7.8.7 - Authenticated (Contributor+) Server-Side Request Forgery CVE-2025-68600 6.4 Krissaphat Jankaew December 24, 2025
9 Link Library <= 7.8 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2025-46237 6.4 Muhammad Yudha - DJ April 22, 2025
10 Link Library <= 7.7.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Link Additional Parameters CVE-2025-2889 6.4 siavashvafshar April 4, 2025

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