High severity7.5NVD Advisory· Published Jul 16, 2026· Updated Aug 17, 2026
CVE-2026-59862
CVE-2026-59862
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
Microsoft.OpenAPI.KiotaNuGet | >= 1.30.0, < 1.32.0 | 1.32.0 |
Microsoft.OpenAPI.Kiota.BuilderNuGet | >= 1.30.0, < 1.32.0 | 1.32.0 |
Microsoft.OpenApi.KiotaNuGet | < 1.29.1 | 1.29.1 |
Microsoft.OpenApi.Kiota.BuilderNuGet | < 1.29.1 | 1.29.1 |
Affected products
1- Range: <1.29.1, <1.32.0
Patches
Vulnerability mechanics
References
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