CVE-2019-18213
HIGHXML Language Server < 0.9.1 - XML External Entity Injection via Crafted XML Document
Title source: llmDescription
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.
References (6)
Core 6
Core References
Product x_refsource_misc
https://github.com/angelozerr/lsp4xml/
Patch, Third Party Advisory x_refsource_misc
https://github.com/redhat-developer/vscode-xml/
Third Party Advisory x_refsource_misc
https://marketplace.visualstudio.com/items?itemName=redhat.vscode-xml
Patch, Third Party Advisory x_refsource_misc
https://github.com/angelozerr/lsp4xml/pull/566
Release Notes, Third Party Advisory x_refsource_confirm
https://github.com/angelozerr/lsp4xml/blob/master/CHANGELOG.md#others
Exploit, Third Party Advisory x_refsource_misc
https://www.shielder.it/blog/dont-open-that-xml-xxe-to-rce-in-xml-plugins-for-vs-code-eclipse-theia/
Scores
CVSS v3
8.8
EPSS
0.0059
EPSS Percentile
69.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-611
Status
published
Products (3)
eclipse/wild_web_developer
theia_xml_extension_project/theia_xml_extension
xml_language_server_project/xml_server_project
< 0.9.1
Published
Oct 23, 2019
Tracked Since
Feb 18, 2026