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CVE-2019-18952 is an arbitrary file upload vulnerability in SibSoft Xfilesharing through version 2.5.1. The issue affects the cgi-bin/up.cgi upload handler, which allows an attacker to upload arbitrary files. According to the provided content, this can be chained with CVE-2019-18951 to achieve remote code execution by uploading a .html file containing short codes that is then served over HTTP. The core flaw is insufficient restriction or validation of uploaded file content and type in the upload functionality.
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Cross-references every affected SKU, including bundled OEM variants.
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