Vulnerability · Published Jun 15, 2026 · Assigned by AMZN
CVE-2026-11931Insecure Permissions on Authentication Token Cache File in Kiro IDE
Medium 5.5
In plain English
A medium-severity incorrect default permissions in Kiro IDE from AWS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
Weakness: CWE-276 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- https://kiro.dev/changelog/ide/0-11/#patch-0-11-133 release-notes
- https://aws.amazon.com/security/security-bulletins/2026-045-aws/ vendor-advisory