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)
Published Oct 23, 2019
8.8
HIGHCVSS 3.1
EPSS 1.98%
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.
Affected products
No data.
Configuration 1
- < 0.9.1
Configuration 2
- n/a
Configuration 3
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.98% (0.01981) | 79.80th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.98% (0.01981) | 79.64th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.51% (0.00511) | 76.81th | v3 (v2023.03.01) |
| Feb 16, 2024 | 0.51% (0.00511) | 75.95th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.52% (0.00518) | 76.07th | v3 (v2023.03.01) |
| Sep 13, 2023 | 0.52% (0.00518) | 73.88th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.38% (0.00380) | 68.70th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 11.57% (0.11569) | 88.81th | v2 (v2022.01.01) |
| Feb 3, 2022 | 6.21% (0.06208) | 81.93th | v1 |
| Jan 6, 2022 | 6.21% (0.06208) | 81.75th | v1 |
| Jan 5, 2022 | 1.45% (0.01454) | 72.86th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.45% (0.01454) | 0.00th | v1 |
References (6)
- https://github.com/angelozerr/lsp4xml/ x_refsource_MISCProduct
- https://github.com/angelozerr/lsp4xml/blob/master/CHANGELOG.md#others x_refsource_CONFIRMRelease NotesThird Party Advisory
- https://github.com/angelozerr/lsp4xml/pull/566 x_refsource_MISCPatchThird Party Advisory
- https://github.com/redhat-developer/vscode-xml/ x_refsource_MISCPatchThird Party Advisory
- https://marketplace.visualstudio.com/items?itemName=redhat.vscode-xml x_refsource_MISCThird Party Advisory
- https://www.shielder.it/blog/dont-open-that-xml-xxe-to-rce-in-xml-plugins-for-vs-code-eclipse-theia/ x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/angelozerr/lsp4xml/ | x_refsource_MISCProduct | |
| https://github.com/angelozerr/lsp4xml/blob/master/CHANGELOG.md#others | x_refsource_CONFIRMRelease NotesThird Party Advisory | |
| https://github.com/angelozerr/lsp4xml/pull/566 | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/redhat-developer/vscode-xml/ | x_refsource_MISCPatchThird Party Advisory | |
| https://marketplace.visualstudio.com/items?itemName=redhat.vscode-xml | x_refsource_MISCThird Party Advisory | |
| https://www.shielder.it/blog/dont-open-that-xml-xxe-to-rce-in-xml-plugins-for-vs-code-eclipse-theia/ | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.