Threats Tagged 'cve-2026-6827'
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Threats Tagged 'cve-2026-6827'
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0 CVE-2026-6827 is a medium severity cross-site scripting (XSS) vulnerability in EmilStenstrom justhtml versions before 1.17.0. It involves improper input neutralization during web page generation, particularly when custom sanitization policies preserve foreign namespaces like SVG and MathML. This can allow dangerous content such as SVG <foreignObject> and MathML <annotation-xml> elements to bypass sanitization and become active HTML after reparsing. Additional issues include resource-loading CSS via SVG filters and preserved <style> tags, as well as serialization of script/style/Comment nodes into active markup. These issues mainly affect advanced or custom configurations rather than the default safe sanitization path. Join the discussion | CVE Database V5 | 08/23/2026, 13:34:11 UTC Added: 08/23/2026, 13:52:39 UTC |
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