XML Language Server (aka lsp4xml) before 0.9.1, as used in Red Hat XML Language Support…
Priority MEDIUM 42CWE-611Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.01981 80th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:xml_language_server_project:xml_server_project:*:*:*:*:*:*:*:* | before 0.9.1 | Vulnerable | Xml Language Server Project |
| cpe:2.3:a:eclipse:wild_web_developer:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Eclipse Foundation |
| cpe:2.3:a:theia_xml_extension_project:theia_xml_extension:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Theia Xml Extension Project |
- cpe:2.3:a:xml_language_server_project:xml_server_project:*:*:*:*:*:*:*:* Versions before 0.9.1 Vulnerable ·Xml Language Server Project
- cpe:2.3:a:eclipse:wild_web_developer:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Eclipse Foundation
- cpe:2.3:a:theia_xml_extension_project:theia_xml_extension:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Theia Xml Extension Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-18213
- 2026-10-03 Alias added: GHSA-8whm-fx4q-45xx
References
Exploit 1
Patch 2
Advisory 2
Sources
- CVE-2019-18213 · CVE Program
- CVE-2019-18213 · NVD
- FIRST EPSS
- GHSA-8whm-fx4q-45xx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences