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CVE-2026-11931

Insecure Permissions on Authentication Token Cache File in Kiro IDE

Published: Jun 15, 2026Updated: Jun 15, 2026 Sources: CVE List
NVD MITRE
5.5CVSS
MEDIUM

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None

Weaknesses

CWE-276CWE-276 Incorrect default permissions

Affected Products

Kiro IDE
AWS
Cloud & SaaS / cloud-platform
awscommercialUSCloud & SaaSaka aws

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://kiro.dev/changelog/ide/0-11/#patch-0-11-133
kiro.dev
https://aws.amazon.com/security/security-bulletins/2026-045-aws/
aws.amazon.com

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