CVE-2026-86205
CVE-2026-86205 · h3 before 2.0.1-rc.18 Open Redirect via redirectBack()
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h3 versions before 2.0.1-rc.18 contain an open redirect vulnerability in the redirectBack() utility that fails to sanitize protocol-relative paths in the Referer header pathname. Attackers can craft a same-origin URL with a double-slash path segment that passes origin validation but produces a Location header interpreted by browsers as a protocol-relative redirect to an external domain.
CVSS 5.3 · Moyenne · EPSS 0,3% · Correctif disponible
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Pile logicielle: node