CVE-2026-25931 (GCVE-0-2026-25931)
Vulnerability from cvelistv5 – Published: 2026-02-09 22:10 – Updated: 2026-02-10 16:54
VLAI
EPSS
VEX
Title
vscode-spell-checker has a workspace-trust bypass Code Execution
Summary
vscode-spell-checker is a basic spell checker that works well with code and documents. Prior to v4.5.4, DocumentSettings._determineIsTrusted treats the configuration value cSpell.trustedWorkspace as the authoritative trust flag. The value defaults to true (package.json) and is read from workspace configuration each time settings are fetched. The code coerces any truthy value to true and forwards it to ConfigLoader.setIsTrusted , which in turn allows JavaScript/TypeScript configuration files ( .cspell.config.js/.mjs/.ts , etc.) to be located and executed. Because no VS Code workspace-trust state is consulted, an untrusted workspace can keep the flag true and place a malicious .cspell.config.js ; opening the workspace causes the extension host to execute attacker-controlled Node.js code with the user’s privileges. This vulnerability is fixed in v4.5.4.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-10 16:54 UTC
CWE
Assigner
GitHub_M
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/streetsidesoftware/vscode-spel… | x_refsource_CONFIRM |
| https://github.com/streetsidesoftware/vscode-spel… | x_refsource_MISC |
| https://drive.google.com/file/d/1mT4SOkkHSHU6NFfK… | x_refsource_MISC |
| https://github.com/streetsidesoftware/vscode-spel… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| streetsidesoftware | vscode-spell-checker |
Affected:
< 4.5.4
|
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Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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model, served locally by ML-Gateway.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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