CVE Details
Basic Information
| Title | LocalSend is Vulnerable to Man-in-the-Middle Attacks, Leading to File Interception |
|---|---|
| Type | cve |
| Published | 2025-08-01T23:04:29.207Z |
| Modified | 2025-08-01T23:04:29.207Z |
Product Information
| Vendor | localsend |
|---|---|
| Product | localsend |
| Version | <= 1.17.0 |
CVSS Information
| Base Score | 9.3 (CRITICAL) |
|---|---|
| Attack Vector | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H |
AI Analysis
| AI Description | A critical Man-in-the-Middle vulnerability in LocalSend’s discovery protocol allows attackers to intercept and modify file transfers, potentially stealing data or injecting malware. This affects versions 1.16.1 and below. |
|---|---|
| AI Severity | Critical |
| AI Vendor | LocalSend Community |
| AI Product | LocalSend |
| AI Version | 1.16.1 and below |
Affected Products
- localsend localsend <= 1.17.0
Additional Information
| CWE List | CWE-300, CWE-345 |
|---|---|
| Source | GitHub_M |
Description
LocalSend is an open-source app to securely share files and messages with nearby devices over local networks without needing an internet connection. In versions 1.16.1 and below, a critical Man-in-the-Middle (MitM) vulnerability in the software’s discovery protocol allows an unauthenticated attacker on the same local network to impersonate legitimate devices, silently intercepting, reading, and modifying any file transfer. This can be used to steal sensitive data or inject malware, like ransomware, into files shared between trusted users. The attack is hardly detectable and easy to implement, posing a severe and immediate security risk. This issue was fixed in version 1.17.0.