CVE-2026-83606

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{"bugzilla": {"description": "xmldom: xmldom: Denial of Service via regular expression backtracking in processing instructions", "id": "2526808", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526808"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1333", "details": ["A flaw was found in xmldom, a JavaScript XML DOM parser. This vulnerability, a Regular Expression Denial of Service (ReDoS), occurs due to inefficient processing of unterminated processing instructions in XML input. A remote, unauthenticated attacker can send a specially crafted XML input, causing quadratic backtracking and stalling the Node.js event loop. This can lead to a Denial of Service (DoS) for applications using xmldom."], "name": "CVE-2026-83606", "package_state": [{"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift4/ose-console", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-01T14:21:27Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-83606\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-83606\nhttps://github.com/xmldom/xmldom/commit/73df6b8bdbd86f904b9e8c3ab9c49aa54ef2802e\nhttps://github.com/xmldom/xmldom/pull/1039\nhttps://github.com/xmldom/xmldom/releases/tag/0.9.11\nhttps://github.com/xmldom/xmldom/security/advisories/GHSA-g53g-w8rj-fmg7"], "threat_severity": "Important"}

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