html/template: golang: Go html/template: Cross-Site Scripting via improper URL escaping in meta tag content

A flaw was found in the html/template package of Go. A remote attacker could exploit this vulnerability by inserting ASCII whitespaces around the equals sign = within a URL's content attribute inside a tag. This improper escaping could lead to Cross-Site Scripting XSS, allowing the attacker to...

CVE-2026-39823

CVE-2026-27142 fixed a vulnerability in which URLs were not correctly escaped inside of a tag's attribute. If the URL content were to insert ASCII whitespaces around the '=' rune inside of the attribute, the escaper would fail to similarly escape it, leading to XSS...