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OpenAdvisories
High · 7.8 CVE-2026-12957 EUVD-2026-38488GHSA-xhcr-j4j9-3gh7

Arbitrary Code Execution in Language Servers for AWS

Published Jun 23, 2026 · Updated Jun 23, 2026 · Assigned by AMZN

Description

Improper trust boundary enforcement in Language Servers for AWS before version 1.65.0 on all supported platforms may allow a for arbitrary code execution. If a local user opens a maliciously crafted workspace, any commands within the project configuration files may be automatically executed. This issue requires the user to trust the workspace when prompted.

To remediate this issue, users should upgrade to Language Servers for AWS version 1.65.0 or higher.

Affected products

VendorProductAffectedFixed
Amazon Web Services Language Servers for AWS < 1.65.0 1.65.0

Affected packages

EcosystemPackageAffectedFixedRecord
npm @aws/lsp-codewhisperer < 0.0.113 0.0.113 GHSA-xhcr-j4j9-3gh7

References