CVE-2026-66050 NitroShare Desktop 0.3.4 Path Traversal via LAN File Transfer Server
Unauthenticated attackers on the local network can write arbitrary files via path traversal, potentially achieving persistent code execution on the victim's machine.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-66050?
CVE-2026-66050 is a high-severity path traversal vulnerability in nitroshare-desktop, published on 27 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
NitroShare Desktop through 0.3.4 contains a path traversal vulnerability in its LAN file transfer server that allows unauthenticated attackers on the same network to write arbitrary files by sending a crafted filename containing directory traversal sequences in the JSON item header name field. Attackers can exploit the lack of path validation to write files outside the transfer root directory to arbitrary locations the current user has write access, including the Windows Startup folder, enabling persistent code execution on the next user login.
Weakness: CWE-22
Which versions are affected by CVE-2026-66050?
How do I fix CVE-2026-66050?
No fix has been published for CVE-2026-66050 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-66050 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-66050 exists.
Sources
Also known as GHSA-5xhx-w5wq-c68v.