Threats Tagged 'ghsa-c2j3-45gr-mqc4'
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Threats Tagged 'ghsa-c2j3-45gr-mqc4'
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DOMPurify: `CUSTOM_ELEMENT_HANDLING` bypasses `afterSanitizeElements` for allowed custom elements. 0 DOMPurify 3.4.11 has a vulnerability involving the CUSTOM_ELEMENT_HANDLING configuration where allowed custom elements bypass the afterSanitizeElements hook. This causes sensitive attributes to be preserved on these custom elements while they are stripped from normal elements. Although DOMPurify itself does not directly allow executable payloads at sanitize time, the preserved attributes can lead to second-order XSS when re-injected into HTML sinks later. The issue arises from early return logic in the sanitization flow that skips further sanitization steps for allowed custom elements. This vulnerability is fixed in versions 3.4.12 and later. Join the discussion | GCVE Database | 07/21/2026, 19:41:07 UTC Added: 07/22/2026, 00:11:47 UTC |
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