CVE-2026-86140

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{"bugzilla": {"description": "libxml2: libxml2: Arbitrary code execution via stack-based buffer overflow in xmlSnprintfElements", "id": "2528989", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2528989"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L", "status": "draft"}, "cwe": "CWE-120", "details": ["A flaw was found in libxml2, a software library for parsing XML (Extensible Markup Language) documents. The `xmlSnprintfElements` function within this library is vulnerable to a stack-based buffer overflow, a type of memory corruption. A local attacker could exploit this flaw without requiring privileges or user interaction, potentially leading to arbitrary code execution or a denial of service."], "name": "CVE-2026-86140", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "libxml2", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "swift-lang", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-09-05T04:26:13Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-86140\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-86140\nhttps://github.com/GNOME/libxml2/commit/d1686f91dbda141a752200419d35639fd6b38340\nhttps://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4"], "threat_severity": "Important"}

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