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

> CVE-2026-11931: Insecure Permissions on Authentication Token Cache File in Kiro IDE. CVSS 5.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-11931
Last updated: 2026-06-17T10:14:31Z

- Published: 2026-06-15 18:33 UTC · Updated: 2026-06-17 10:14 UTC · Assigner: AMZN
- CVSS: 5.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS: 0.12%, 2th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-276

## 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 vendors and products

- AWS: Kiro IDE

## Tracked companies

- [Amazon Web Services](https://rewindex.com/company/aws.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-11931)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-11931)
- [https://aws.amazon.com/security/security-bulletins/2026-045-aws/](https://aws.amazon.com/security/security-bulletins/2026-045-aws/)
- [https://kiro.dev/changelog/ide/0-11/\#patch-0-11-133](https://kiro.dev/changelog/ide/0-11/#patch-0-11-133)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-11931 · Markdown: https://rewindex.com/cve/CVE-2026-11931.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-11931 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:15:33.281Z