CVE-2026-10591Network attack vector

Unauthenticated command execution via sensitive-path writes

Published Jun 2, 2026 · Updated Jun 2, 2026

Improper access control in Kiro IDE before 0.11 allows remote attackers to execute arbitrary commands through crafted instructions. The file write tool accepts those instructions and writes attacker-controlled content to execution-sensitive paths such as .vscode/tasks.json, which the IDE automatically runs when a folder opens. Exploitation is unauthenticated but requires a user to open the affected folder, and successful commands run with the user's local privileges.

CVSS severity8.6
High
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Kiro IDE before 0.11 allows remote attackers to execute arbitrary commands through crafted instructions. The file write tool accepts those instructions and writes attacker-controlled content to execution-sensitive paths such as .vscode/tasks.json, which the IDE automatically runs when a folder opens. Exploitation is unauthenticated but requires a user to open the affected folder, and successful commands run with the user's local privileges.

The record

CVE
CVE-2026-10591
Published
Jun 2, 2026
Updated
Jun 2, 2026
Vendor
Amazon Web Services
Product
Kiro IDE
Classifications
CWE-732, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Amazon Web Services · Kiro IDEversion=0 <11

Published CVSS scores

8.8Amazon Web ServicesCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.6Amazon Web ServicesCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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