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.

References

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

https://thehackernews.com/2026/07/ghostapproval-symlink-flaws-could-let.html

https://www.darkreading.com/cloud-security/amazon-q-vs-extension-flaw-leads-cloud-credential-theft

https://www.theregister.com/cyber-crime/2026/06/26/amazon-q-flaw-let-booby-trapped-git-repos-execute-code-swipe-cloud-creds/5263202

https://www.securityweek.com/amazon-q-flaw-enabled-cloud-credential-theft-via-malicious-repositories/

https://github.com/aws/language-servers/security/advisories/GHSA-xhcr-j4j9-3gh7

Details

Source: Mitre, NVD

Published: 2026-06-23

Updated: 2026-06-23

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Severity: High

CVSS v4

Base Score: 8.5

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Severity: High

EPSS

EPSS: 0.00118