Open Redirect Vulnerability in NSP

Executive Summary

CVE-2026-40465 is an Open Redirect vulnerability in Nokia's Network Services Platform (NSP). It occurs because the server does not properly validate the URL or redirect parameter, allowing attackers to trick users into visiting malicious or untrusted websites.

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Detection Guidance

To detect this open redirect vulnerability, inspect HTTP requests for unvalidated URL or redirect parameters in Nokia NSP traffic. Check logs for unusual redirects to external domains. Use tools like Burp Suite or OWASP ZAP to intercept and analyze requests for missing server-side validation.

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Impact Analysis

This vulnerability could allow attackers to redirect users to phishing sites or malware downloads. Users might unknowingly share sensitive information or install malicious software if they follow the malicious link.

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Mitigation Strategies

Apply the latest patches from Nokia for NSP versions 24.11-SP15, 25.11-SP5, 26.4, or later. Ensure strict server-side validation of all redirect parameters. Monitor network traffic for suspicious redirect attempts and update firewall rules to block known malicious domains.

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