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

Quick assessment

Affected
AWS Kiro IDE
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

AWS Kiro IDE是AWS的云计算、机器学习和云主机领域的平台或服务。 AWS Kiro IDE 0.11.133之前版本存在权限许可和访问控制问题漏洞，该漏洞源于默认权限不正确，使用全局可读权限代替了所有者限制权限，可能导致其他本地用户或进程访问身份验证令牌缓存文件。

CVSS 5.5 · Medium EPSS 0.12% · P2

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
AWS Kiro IDE < 0.11.133 affected
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I. Basic Information for CVE-2026-11931

Vulnerability Information
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Vulnerability Title
Insecure Permissions on Authentication Token Cache File in Kiro IDE
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
缺省权限不正确
Source: CVE Program / CVE List V5
Vulnerability Title
AWS Kiro IDE 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AWS Kiro IDE是AWS的云计算、机器学习和云主机领域的平台或服务。 AWS Kiro IDE 0.11.133之前版本存在权限许可和访问控制问题漏洞，该漏洞源于默认权限不正确，使用全局可读权限代替了所有者限制权限，可能导致其他本地用户或进程访问身份验证令牌缓存文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
AWS Kiro IDE 0 ~ 0.11.133 -

II. Public POCs for CVE-2026-11931

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III. Intelligence Information for CVE-2026-11931

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Vendor Advisories for CVE-2026-11931 (1)

Vendor Pages for CVE-2026-11931 (1)

IV. Related Vulnerabilities

Same product: Kiro IDE
Same vendor: AWS
Same weakness: CWE-276

V. Comments for CVE-2026-11931

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