CVE-2026-59864
CVE-2026-59864 updated by NVD
Summary
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.
Affected packages
| Ecosystem | Package | Affected versions | Fixed versions |
|---|---|---|---|
| NuGet | Microsoft.OpenApi.Kiota | — | 1.32.5, 1.29.1 |
| NuGet | Microsoft.OpenApi.Kiota.Builder | — | 1.32.5, 1.29.1 |
Remediation: Upgrade to 1.32.5 or later.
References
Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.
Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.
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EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.