CVE-2026-90604
Received Received - Intake

Cross-Site Scripting in Totolink A3002MU Router

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: VulDB

Description
A security flaw has been discovered in Totolink A3002MU Hh-B20211125.1046. This affects an unknown part of the component Anchor Tag Handler. Performing a manipulation results in cross site scripting. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks.

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Meta Information

Published
2026-09-14
Last Modified
2026-09-14
Generated
2026-09-14
AI Q&A
2026-09-14
EPSS Evaluated
N/A
NVD
CVE-2026-90604
EUVD
EUVD-2026-77139

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
totolink a3002mu h-h-b20211125.1046

Helpful Resources

Exploitability

CWE
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KEV
KEV Icon
CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

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Executive Summary

This vulnerability is a Cross-Site Scripting (XSS) flaw in the Totolink A3002MU router (firmware version Hh-B20211125.1046). It exists in the Anchor Tag Handler component of the management interface. The issue occurs because certain pages read URL fragments (text after #) and pass them to JavaScript without proper validation or escaping. Attackers can craft malicious URLs to execute arbitrary JavaScript in the browser of an authenticated user.

Detection Guidance

Check if your TOTOlink A3002MU router (firmware Hh-B20211125.1046) has pages like portfw.htm, reboot.htm, or arptbl.htm accessible via the management interface. Test by appending a malicious script fragment to the URL, such as #<script>alert(1)</script>, and observe if the script executes in the browser.

Impact Analysis

An attacker could exploit this to steal session tokens or perform actions on behalf of the user. For example, they might capture login credentials or manipulate router settings. The attack requires user interaction, such as clicking a malicious link, but does not need direct access to the network.

Compliance Impact

This XSS vulnerability could lead to unauthorized access to sensitive data, potentially violating GDPR (data protection) and HIPAA (health information privacy) requirements. Organizations using this router may face compliance risks if user data is compromised due to the flaw.

Mitigation Strategies

Disable remote management access to the router if enabled. Update the router firmware to the latest version if a patch is available. Avoid clicking untrusted links in the router's management interface. Consider replacing the device if no official patch is released.

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