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OpenAdvisories
High · 7.5 CVE-2026-59862 EUVD-2026-44927GHSA-7f3j-j7jj-r3vr

Kiota: Code Generation Literal Injection in the Python Generator

Published Jul 16, 2026 · Updated Aug 17, 2026 · Assigned by GitHub_M

Description

Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.0, Kiota's Python generator let attacker-controlled enum value descriptions from x-ms-enum.values[].description flow through KiotaBuilder.SetEnumOptions into Documentation.DescriptionTemplate and PythonConventionService.RemoveInvalidDescriptionCharacters without newline sanitization, allowing generated inline comments to split and execute attacker-controlled Python code at module scope when generated modules were imported. This issue is fixed in version 1.29.1 and 1.32.0.

Affected products

VendorProductAffectedFixed
microsoft kiota >= 1.30.0, < 1.31.1, < 1.29.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
NuGet Microsoft.OpenAPI.Kiota >= 1.30.0, < 1.32.0 1.32.0 GHSA-7f3j-j7jj-r3vr
NuGet Microsoft.OpenApi.Kiota < 1.29.1 1.29.1 GHSA-7f3j-j7jj-r3vr
NuGet Microsoft.OpenAPI.Kiota.Builder >= 1.30.0, < 1.32.0 1.32.0 GHSA-7f3j-j7jj-r3vr
NuGet Microsoft.OpenApi.Kiota.Builder < 1.29.1 1.29.1 GHSA-7f3j-j7jj-r3vr

References