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.

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
AWS Kiro IDE unaffected
Version Status Constraints
0 affected < 0.11.133

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Aws Subscribe
Kiro Ide Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://aws.amazon.com/security/security-bulletins/2026-045-aws/ cve-icon cve-icon
https://kiro.dev/changelog/ide/0-11/#patch-0-11-133 cve-icon cve-icon
History

Mon, 15 Jun 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 15 Jun 2026 19:30:00 +0000

Type Values Removed Values Added
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.
Title Insecure Permissions on Authentication Token Cache File in Kiro IDE
First Time appeared Aws
Aws kiro Ide
Weaknesses CWE-276
CPEs cpe:2.3:a:aws:kiro_ide:*:*:linux:*:*:*:*:*
cpe:2.3:a:aws:kiro_ide:*:*:macos:*:*:*:*:*
Vendors & Products Aws
Aws kiro Ide
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 6.8, '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published:

Updated: 2026-06-15T20:08:12.566Z

Reserved: 2026-06-10T18:47:16.836Z

Link: CVE-2026-11931

cve-icon Vulnrichment

Updated: 2026-06-15T20:08:07.870Z

cve-icon NVD

Status : Received

Published: 2026-06-15T20:16:25.290

Modified: 2026-06-15T20:16:25.290

Link: CVE-2026-11931

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses