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.

Score

CVSS 3.1 7.1 High

Status

Deferred - security-advisories@github.com

Published

2026-07-16

Last modified

2026-10-24

Weaknesses

CWE-22, CWE-829, CWE-918

Affected products

• Kiota (Microsoft)

References

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