Language Servers for AWS Vulnerable to Arbitrary Code Execution
### Summary Language Servers for AWS (the aws/language-servers project) provide the underlying language-server runtime that powers Amazon Q Developer's AI coding assistance across its IDE plugins (Visual Studio Code, JetBrains, Eclipse, and Visual Studio). Improper trust boundary enforcement in Language Servers for AWS may allow for arbitrary code execution. If a local user opens a maliciously crafted workspace, any commands within the project configuration files may be automatically executed. ### Impact When a local user opens a maliciously crafted workspace and trusts it when prompted, commands defined in the workspace's project-level configuration files may be executed automatically, resulting in arbitrary code execution on the user's host. This issue is triggered when a user opens a workspace, trusts it, and the agent subsequently executes commands defined in the project-level configuration files. Impacted versions: Language Servers for AWS version <1.65.0. ### Patches This issue has been addressed in Language Servers for AWS version 1.65.0. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes. ### Workarounds No workarounds are available. ### References If you have any questions or comments about this advisory, AWS Security asks that you contact them via their [vulnerability reporting page](https://aws.amazon.com/security/vulnerability-reporting) or directly via email to [aws-security@amazon.com](
GHSA-xhcr-j4j9-3gh7
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:GHSA-xhcr-j4j9-3gh7
@aws/lsp-codewhisperer
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 0.0.113
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.0.113"
}
]
}
],
"package": {
"name": "@aws/lsp-codewhisperer",
"purl": "pkg:npm/%40aws/lsp-codewhisperer",
"ecosystem": "npm"
},
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-xhcr-j4j9-3gh7/GHSA-xhcr-j4j9-3gh7.json"
}
}
]- Related CVEs
- CVE-2026-12957
Source reference:
/aliases
Publisher severity
high
Source reference: /database_specific/severity
- Event
- #14224 · Revision 1
- Added to Heist Feed
- Publisher date