CVE-2026-12957

High

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.

SeverityHigh

CVSS7.8

Exploit probability—

Product@aws/lsp-codewhisperer

PublishedJun 23, 2026

First seenJun 23, 2026

Weakness typeCWE-732CWE-732

How to fix

Update

@aws/lsp-codewhisperer0.0.113 or later

Vendor advisories

aws.amazon.com/security/security-bulletins/2026-047-aws/

Affected products

Product	Affected versions	Fixed in
@aws/lsp-codewhisperernpm	v < 0.0.113	0.0.113

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