CVE-2026-59865Public exploitNetwork attack vector

Arbitrary shell execution via spec-supplied install command

Published Jul 16, 2026 · Updated Jul 16, 2026

Command injection in Microsoft Kiota before 1.29.1 and 1.30.0 through 1.32.4 allows attackers to execute arbitrary shell commands. The kiota info command emits an OpenAPI description's x-ms-kiota-info dependencyInstallCommand verbatim as a recommendation and in JSON consumed by the VS Code extension. Execution requires an attacker-controlled or compromised description and either a developer running the recommendation or the extension invoking its dependency-install action.

CVSS severity9.3
Critical
EPSS probability4.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Command injection in Microsoft Kiota before 1.29.1 and 1.30.0 through 1.32.4 allows attackers to execute arbitrary shell commands. The kiota info command emits an OpenAPI description's x-ms-kiota-info dependencyInstallCommand verbatim as a recommendation and in JSON consumed by the VS Code extension. Execution requires an attacker-controlled or compromised description and either a developer running the recommendation or the extension invoking its dependency-install action.

The record

CVE
CVE-2026-59865
Published
Jul 16, 2026
Updated
Jul 16, 2026
Vendor
Microsoft
Product
Kiota
Classifications
CWE-94, CWE-829, T1204.002, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 1.32.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Kiotaversion=< 1.32.5

Published CVSS scores

9.3GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-829Inclusion of Functionality from Untrusted Control Sphere
T1204.002Malicious File
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo