Vulnerability Intelligence Report
Arbitrary Code Execution in Language Servers for AWS
CVE-2026-12957
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.
No Active Exploit Signals
CVSS Base Score
8.5
HIGH
EPSS Probability:0.12%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-732 ↗CWE-732: Incorrect Permission Assignment for Critical Resource
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Amazon Web Services | Language Servers for AWS | 0 < 1.65.0 (affected) |
Threat Intelligence Signals
EPSS Score
0.118%
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Amazon · Vendor · USA |
| Reserved | 2026-06-23T01:55:35 |
| Published | 2026-06-23T16:02:53 |
| Last Updated | 2026-06-23T17:50:18 |
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