🛡️ CVE-2026-12957

🟠 CVSS 7.8 — High ✅ No Known Exploit CWE-732 NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-12957 is classified as CWE-732: Incorrect Permission Assignment for Critical Resource. A sensitive resource is assigned permissions that let unintended actors read or modify it.

Affected software

CVE-2026-12957 is recorded against 1 package.

  • unknown

Timeline and source

Published on 23 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

aws.amazon.com
github.com

Details

Severity HIGH
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE CWE-732
Public Exploit ✅ No
Source NVD
Published 2026-06-23
Updated 2026-08-11
Modified 2026-06-23
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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