What is CVE-2026-10591?

CVE-2026-10591 is a high-severity vulnerability in Amazon Kiro Ide, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 8.8/10. Published 2026-06-02.

How severe is CVE-2026-10591?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Amazon Kiro Ide

CVE-2026-10591

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.

Published 2026-06-02 · last modified 2026-10-20.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (57.7th percentile), scored 2026-11-09.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.008 · change: +0.001

Affected products

Amazon Kiro Ide
AWS Kiro Ide — versions 0

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

ff89ba41-3aa1-4d27-914a-91399e9639e5 (release-notes, Release Notes)
ff89ba41-3aa1-4d27-914a-91399e9639e5 (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-10591?: CVE-2026-10591 is a high-severity vulnerability in Amazon Kiro Ide, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 8.8/10. Published 2026-06-02.
How severe is CVE-2026-10591?: High severity. CVSS v3 base score is 8.8 out of 10.