Cross-Site Scripting Vulnerability in Go Language's Meta Tag Handling

CVE-2026-39823

What is CVE-2026-39823?

A vulnerability exists in the Go Language's handling of URLs within the tag's attribute. When ASCII whitespace characters are improperly inserted around the '=' character, the escaping mechanism fails, which can enable the possibility of Cross-Site Scripting (XSS) attacks. This flaw could allow malicious users to inject executable scripts, compromising the security of web applications that utilize this functionality. It is crucial for developers to ensure proper escaping of URL content to mitigate these risks and enhance the security posture of their applications.

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