CVEs / CVE-2026-59864
CVE-2026-59864
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 products · 1
| Product | Versions affected | Fixed in |
|---|---|---|
| Microsoft 365 Copilot | not stated by CPE | — |
Versions as NVD's CPE configuration states them; "—" means the record gives no fixed version, not that none exists. Check the vendor's advisory in the references.
In this registry
- Microsoft 365 Copilot for Government — agent dossier
References · 4
- github.com/microsoft/kiota/commit/9a185994a4e549b7bba3cc2beffb9736aa902e79
- github.com/microsoft/kiota/pull/7892
- github.com/microsoft/kiota/releases/tag/v1.32.5
- github.com/microsoft/kiota/security/advisories/GHSA-4jwf-m4wg-8p66
The official record's references, as NVD lists them, minus any tagged Exploit. Nothing here is an exploit or a proof of concept.
Description, scores, versions and references are the official CVE record's own, retrieved 2026-10-26 from NVD. Category, attack surface and cross-links are this registry's classification and can be wrong — use the button above. Not a severity assessment for your deployment.