CVE-2026-1744 Details
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.
A cross-site scripting (XSS) vulnerability has been identified in the D-Link DSL-6641K router, specifically in the N8.TR069.20131126 version. The issue arises in the 'doSubmitPPP' function of the 'sp_pppoe_user.js' file, where the 'Username' input is not properly sanitized before being included in the router's configuration. This lack of input validation allows for the injection of malicious JavaScript, which is executed when the configuration is accessed. The vulnerability can be exploited remotely and requires authenticated user interaction.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Feb 3, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://tzh00203.notion.site/D-Link-DSL6641K-version-N8-TR069-20131126-XSS-via-sp_pppoe_user-js-Configuration-2eeb5c52018a80d083aaf19efbaa9130?source=copy_link | CISA-ADP | ExploitThird Party Advisory |
| https://tzh00203.notion.site/D-Link-DSL6641K-version-N8-TR069-20131126-XSS-via-sp_pppoe_user-js-Configuration-2eeb5c52018a80d083aaf19efbaa9130?source=copy_link | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/?ctiid.343675 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.343675 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.742439 | [email protected] | Third Party AdvisoryVDB Entry |
| https://www.dlink.com/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| dlink dsl-6641k firmware | n8.tr069.20131126 |
CPE
Remediation
| |
| dlink dsl-6641k | All versions |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Feb 10, 2026 | Initial Analysis | [email protected] |
| Feb 3, 2026 | CVE Modified | CISA-ADP |
| Feb 2, 2026 | New CVE Received | [email protected] |