CVE-2026-7026 D-Link DGS-3420 System Information Settings cross site scripting
An attacker can inject malicious scripts via the System Name field in the D-Link DGS-3420 switch interface, potentially compromising user sessions.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-7026?
CVE-2026-7026 is a medium-severity cross-site scripting vulnerability in D-Link DGS-3420, published on 26 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
A vulnerability was determined in D-Link DGS-3420 1.50.018. This issue affects some unknown processing of the component System Information Settings Page. This manipulation of the argument System Name causes cross site scripting. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.
Which versions are affected by CVE-2026-7026?
It affects 1 product.
Products include Dlink Dgs-3420-28tc Firmware.
How do I fix CVE-2026-7026?
No fix has been published for CVE-2026-7026 yet. Limit exposure of the affected software until one is available.
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-2026-7026 being exploited?
There is no known exploitation of CVE-2026-7026 in the wild and no public exploit code.
Sources
Also known as GHSA-36wq-hmr3-cfc5.