CVE-2019-18213: Eclipse Wild Web Developer

High severity, CVSS 8.8. EPSS: 2% chance of exploitation in the next 30 days.

XML Language Server (aka lsp4xml) before 0.9.1, as used in Red Hat XML Language Support (aka vscode-xml) before 0.9.1 for Visual Studio and other products, allows XXE via a crafted XML document, with resultant SSRF (as well as SMB connection initiation that can lead to NetNTLM challenge/response capture for password cracking). This occurs in extensions/contentmodel/participants/diagnostics/LSPXMLParserConfiguration.java.

Affected products

• Eclipse Wild Web Developer: affected versions not specified
• Theia XML Extension Project Theia XML Extension: affected versions not specified
• XML Language Server Project XML Server Project: before 0.9.1 (fixed in 0.9.1)

Published 2019-10-23. Last modified 2026-06-17.