CVE-2019-18213

HIGH 8.8CVE-2019-18213 · Published 23/10/2019 · updated 17/06/2026

In short

CVE-2019-18213 is a HIGH (CVSS 8.8) vulnerability affecting xml server project (xml language server project).
Chance of exploitation in the next 30 days (EPSS): 2.0%, higher than 80.6% of all vulnerabilities.
Fix: update to 0.9.1 or later.

Package	Affected versions	Patched versions
xml server project xml_language_server_project	`< 0.9.1`	`0.9.1`

Description

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

angelozerr/lsp4xml · Product
angelozerr/lsp4xml · Release Notes
angelozerr/lsp4xml#566 · Patch
redhat-developer/vscode-xml · Patch
marketplace.visualstudio.com/items · Third Party Advisory
shielder.it/blog/dont-open-that-xml-xxe-to-rce-in-xml-plugins-for-vs-code-eclipse-theia · Exploit

More vulnerabilities in xml server project

See all →

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Scan my site free