CVE-2026-59864
Description
Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.5, `kiota plugin add` and `kiota plugin generate` (with `-t APIPlugin`) emitted attacker-controlled static_template.file values from x-ai-adaptive-card and x-ai-capabilities into generated Microsoft 365 Copilot and Teams plugin manifests without path validation, allowing ../, absolute, rooted, UNC, Windows drive, or URI paths in response_semantics.static_template.file to cause path traversal or out-of-package file inclusion when the generated plugin was deployed. This issue is fixed in version 1.29.1 and 1.32.5.
How to fix
- Microsoft.OpenApi.Kiota1.32.5, 1.29.1 or later
- Microsoft.OpenApi.Kiota.Builder1.32.5, 1.29.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Microsoft.OpenApi.KiotaNuGet | 1.30.0 ≤ v < 1.32.5, v < 1.29.1 | 1.32.5, 1.29.1 |
| Microsoft.OpenApi.Kiota.BuilderNuGet | 1.30.0 ≤ v < 1.32.5, v < 1.29.1 | 1.32.5, 1.29.1 |
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