CVE-2026-59864 Details
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.
A path traversal vulnerability has been identified in Microsoft Kiota, an OpenAPI-based HTTP client code generator, in versions prior to 1.32.5. The issue arises in the 'kiota plugin add' and 'kiota plugin generate' commands (with the '-t APIPlugin' option), where attacker-controlled values from the 'x-ai-adaptive-card' and 'x-ai-capabilities' extensions are emitted into the generated Microsoft 365 Copilot and Teams plugin manifests without proper path validation. This lack of validation allows for the inclusion of unsafe file references that can traverse directories or access files outside the intended package, leading to potential exploitation when the plugin is deployed.
Users can upgrade to Kiota version 1.32.5 or later, and regenerate any affected plugins.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 16, 2026CISA-ADP
Assessed Jul 16, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/microsoft/kiota/commit/9a185994a4e549b7bba3cc2beffb9736aa902e79 | [email protected] | Source CodeVendor |
| https://github.com/microsoft/kiota/pull/7892 | [email protected] | Source CodeVendor |
| https://github.com/microsoft/kiota/releases/tag/v1.32.5 | [email protected] | Release NotesVendor |
| https://github.com/microsoft/kiota/security/advisories/GHSA-4jwf-m4wg-8p66 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
| CWE-829 | Inclusion of Functionality from Untrusted Control Sphere | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Microsoft Kiota | < 1.32.5 (semver) |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 17, 2026 | CVE Modified | [email protected] |
| Jul 17, 2026 | CVE Modified | CISA-ADP |
| Jul 16, 2026 | New CVE Received | [email protected] |
| Jul 16, 2026 | CVE Modified | CISA-ADP |