CVE-2026-11931 MEDIUM

CVE-2026-11931: Insecure Permissions on Authentication Token Cache File in Kiro IDE

Vendor Aws
Product Kiro IDE
Weakness CWE-276
Published June 15, 2026
Last update June 15, 2026

CVSS base score

6.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

Incorrect default permissions in Kiro IDE on macOS and Linux before version 0.11.133 could expose the authentication token cache file to other local users or processes via world-readable permissions (0644) instead of owner-restricted permissions (0600). To remediate this issue, users should upgrade to Kiro IDE version 0.11.133 or later. After upgrading and restarting the application, the cache file permissions are automatically updated on the next token refresh. Users operating in a multi-user environment can invalidate existing tokens by reauthenticating.

Key dates

02Disclosure timeline

June 15, 2026 CVE published
June 15, 2026 Record updated