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CVE-2026-59866

Kiota: Arbitrary file write + code-injection via x-ms-kiota-info clientClassName and clientNamespaceName PUBLISHED

Description (CNA)

Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.5, Kiota emitted x-ms-kiota-info clientClassName and clientNamespaceName values without identifier or path sanitization as both generated client class or namespace names and generated output path components when `kiota generate` ran without -c/--class-name, allowing an attacker-controlled or compromised OpenAPI description to write generated source outside the -o output directory and inject arbitrary text into generated class or namespace declarations. This issue is fixed in version 1.29.1 and 1.32.5 by GenerationConfiguration.SanitizeClientClassName and SanitizeClientNamespaceName.

Affected (CNA)

Vendor / productVersions
microsoft / kiotaaffected >= 1.30.0, < 1.31.1; affected < 1.29.1

CWE

CWE-22, CWE-94

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.