feat(html): detect anchors with target=_blank lacking rel=noopener noreferrer (CWE-1022) - #132
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…referrer (CWE-1022)
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Adds a new
html/rule tree with one rule:codevigilant.html.reversetabnabbing.anchor.missing-noopener(severity LOW, CWE-1022)Pattern: an
<a>tag withtarget="_blank"whoserelattribute does not includenoopenerornoreferrer. The opened page then retains awindow.openerreference to the linking page and can navigate it (reverse tabnabbing / tab hijacking).semgrep --validate