CVE-2021-34436
CRITICAL
9.8
CVSS Score
Published: September 2, 2021 at 08:55 PM UTC
Updated: June 17, 2026 at 03:55 AM UTC
1 product affected across 1 vendorTheia
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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://bugs.eclipse.org/bugs/show_bug.cgi?id=563174CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-22CWE-611
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