CVE-2026-11931 | Incorrect default permissions in Kiro IDE on macOS and Linux… | CVSS 5.5 MEDIUM

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.

Metadata

CVE ID: CVE-2026-11931
State: PUBLISHED
Assigner: AMZN
Reserved: 2026-06-10 18:47 UTC
Published: 2026-06-15 18:33 UTC
Last updated: 2026-06-15 20:08 UTC
Primary CWE: CWE-276
CWE-276 Incorrect default permissions
Vendor / Product: AWS / Kiro IDE
Sources: cve.org · NVD

Severity & Metrics

5.5 MEDIUM CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
AWS	Kiro IDE	Linux,MacOS	0 < 0.11.133

Weakness (CWE)

CWE	Source	Description
CWE-276	cna	CWE-276 Incorrect default permissions

CVSS scores (2)

Score	Severity	Version	Source	Vector
6.8	MEDIUM	4.0	cna	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
5.5	MEDIUM	3.1	cna	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References (2)