CVE-2026-1744 D-Link DSL-6641K sp_pppoe_user.js doSubmitPPP cross site scripting
Remote attackers can execute arbitrary scripts via the PPPoE username field in the D-Link DSL-6641K router, 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-2026-1744?
CVE-2026-1744 is a medium-severity cross-site scripting vulnerability in D-Link DSL-6641K, published on 2 Feb 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 found in D-Link DSL-6641K N8.TR069.20131126. Affected by this issue is the function doSubmitPPP of the file sp_pppoe_user.js. The manipulation of the argument Username results in cross site scripting. The attack may be launched remotely. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.
Which versions are affected by CVE-2026-1744?
It affects 1 product.
Products include Dlink Dsl-6641k Firmware.
How do I fix CVE-2026-1744?
No fix has been published for CVE-2026-1744 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-2026-1744 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1744 exists.
Sources
Also known as GHSA-gm6w-4mw8-hx49.