CVE-2026-79719 Cross-site scripting in Netron
Reflected XSS in Netron allows attackers to hide nodes, scan ports, or achieve remote code execution via unsanitized node names.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-79719?
CVE-2026-79719 is a medium-severity cross-site scripting vulnerability in Netron, published on 27 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Reflected XSS in Netron versions <=9.1.2 on desktop application through unsanitized node names allows an attacker to hide certain nodes, perform port scanning or abuse a Chrome n-day to achieve Remote Code Execution.
Weakness: CWE-79
Which versions are affected by CVE-2026-79719?
1 open source package ship an affected version, including netron. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
netron PyPI | All versions | 9.1.3 |
Products include Lutzroeder Netron.
How do I fix CVE-2026-79719?
Upgrade netron to 9.1.3 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-79719 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-79719 exists.
Other vulnerabilities in Netron
Sources
Also known as GHSA-wfq7-j297-j875, PYSEC-2026-4002.