CVE-2026-59867

Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.5, Kiota resolved OpenAPI $ref values by fetching remote http(s) URLs and reading local absolute or out-of-tree file paths, allowing `kiota generate` on an attacker-controlled or attacker-influenced description to perform build-time SSRF, remote file inclusion, and local file inclusion by inlining external schemas such as REMOTE_KIOTA_PROP or Leaked into generated clients. This issue is fixed in version 1.29.1 and 1.32.5 by AllowedExternalOriginsStreamLoader and the --allowed-external-origins option.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/microsoft/kiota/commit/cccd798027f0a20db796b3df6c64f9897a39d7b1
https://github.com/microsoft/kiota/pull/7888
https://github.com/microsoft/kiota/releases/tag/v1.32.5
https://github.com/microsoft/kiota/security/advisories/GHSA-rg4h-fpcp-2qm8

Configurations

No configuration.

History

24 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Kiota es un generador de código de cliente HTTP basado en OpenAPI. Antes de la versión 1.32.5, Kiota resolvía los valores $ref de OpenAPI obteniendo URLs http(s) remotas y leyendo rutas de ficheros locales absolutas o fuera del árbol, permitiendo que ’kiota generate’ en una descripción controlada o influenciada por un atacante realizara SSRF en tiempo de compilación, inclusión remota de ficheros e inclusión local de ficheros al incrustar esquemas externos como REMOTE_KIOTA_PROP o Leaked en los clientes generados. Este problema se ha solucionado en la versión 1.32.5 mediante AllowedExternalOriginsStreamLoader y la opción --allowed-external-origins.

Information

Published : 2026-07-16 16:19

Updated : 2026-10-24 20:10

NVD link : CVE-2026-59867

Mitre link : CVE-2026-59867

CVE.ORG link : CVE-2026-59867

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-829

Inclusion of Functionality from Untrusted Control Sphere

CWE-918

Server-Side Request Forgery (SSRF)

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