High severityNVD Advisory· Published Jul 16, 2026· Updated Jul 29, 2026
Kiota: Code Generation Literal Injection in the Python Generator
CVE-2026-59862
Description
Kiota is an OpenAPI based HTTP Client code generator. Prior to 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 1.32.0.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
Microsoft.OpenAPI.KiotaNuGet | < 1.32.0 | 1.32.0 |
Microsoft.OpenAPI.Kiota.BuilderNuGet | < 1.32.0 | 1.32.0 |
Microsoft.OpenApi.KiotaNuGet | < 1.32.0 | 1.32.0 |
Microsoft.OpenApi.Kiota.BuilderNuGet | < 1.32.0 | 1.32.0 |
Affected products
1- Range: <1.32.0
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-7f3j-j7jj-r3vrghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-59862ghsaADVISORY
- github.com/microsoft/kiota/releases/tag/v1.32.0ghsax_refsource_MISCWEB
- github.com/microsoft/kiota/security/advisories/GHSA-7f3j-j7jj-r3vrghsax_refsource_CONFIRMWEB
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