What is local file inclusion?
Local File Inclusion (LFI) attack - a type of attack that exploits a vulnerability in web applications, allowing attackers to read or execute arbitrary files on the server.
Azərbaycanca: Yerli faylın daxil edilməsi (Local File Inclusion, LFI) hücumu - veb proqramların təhlükəsizlik zəifliyindən istifadə edərək, serverdəki ixtiyari faylları oxumağa və ya icra etməyə imkan verən hücum növü.
How it works
LFI attacks occur when user-supplied file paths are not properly validated or sanitized, allowing attackers to access sensitive files or execute malicious code on the server.
Defense checklist5
- 01
Validate and sanitize user-supplied input
- 02
Handle file paths securely and avoid '..' segments
- 03
Use a Web Application Firewall (WAF)
- 04
Regularly update software and components
- 05
Implement EDR solutions
Real-world evidence
Incidents such as CVE-2026-63302 (Quick.CMS), CVE-2026-66415 (Leantime 3.6.2), CVE-2026-54200 (Tobit Laboratories AG TeamDavid's Webbox), CVE-2026-13170 (Eventin WordPress plugin), CVE-2026-58420 (Migration Restore), CVE-2026-73574 (Zimbra Collaboration) are examples of LFI vulnerabilities being exploited.
Sources
- CVE-2026-63302: Quick.CMS is vulnerable to Local File Inclusion (LFI) in the admin.php endpoint via the pnvd
- CVE-2026-66415: Leantime 3.6.2 contains a server-side request forgery and local file inclusion vulnerabilinvd
- CVE-2026-54200: Tobit Laboratories AG TeamDavid's Webbox is vulnerable to a local file inclusion vulnerabnvd
- CVE-2026-13170: The Eventin WordPress plugin before 4.1.20 does not properly validate a template path setnvd
- CVE-2026-58420: Local File Inclusion via file:// URI in Migration Restorenvd
- CVE-2026-73574: In Zimbra Collaboration before 10.1.17, a local file inclusion (LFI) vulnerability existsnvd
Other attack types
See also6
This guide is AI-written from the real incident sources skopnix collected — the examples above are drawn from those cited items, nothing is invented.