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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
Microsoft.OpenApi.KiotaNuGet | >= 1.30.0, < 1.32.5 | 1.32.5 |
Microsoft.OpenApi.Kiota.BuilderNuGet | >= 1.30.0, < 1.32.5 | 1.32.5 |
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, <1.32.5
Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-4jwf-m4wg-8p66ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-59864ghsaADVISORY
- github.com/microsoft/kiota/commit/9a185994a4e549b7bba3cc2beffb9736aa902e79nvdWEB
- github.com/microsoft/kiota/pull/7892nvdWEB
- github.com/microsoft/kiota/releases/tag/v1.32.5nvdWEB
- github.com/microsoft/kiota/security/advisories/GHSA-4jwf-m4wg-8p66nvdWEB
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