CVE-2021-34436
Last modified
CVE-2021-34436 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In Eclipse Theia 0.1.1 to 0.2.0, it is possible to exploit the default build to obtain remote code execution (and XXE) via the theia-xml-extension. This extension uses lsp4xml (recently renamed to LemMinX) in order to provide language support for XML. EPSS estimates a 2.15% chance of exploitation in the next 30 days.
Description
In Eclipse Theia 0.1.1 to 0.2.0, it is possible to exploit the default build to obtain remote code execution (and XXE) via the theia-xml-extension. This extension uses lsp4xml (recently renamed to LemMinX) in order to provide language support for XML. This is installed by default.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Eclipse | Theia | >= 0.1.1, <= 0.2.0 |
References
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=563174Vendor Advisory
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=563174Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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