CVE-2026-59864
Published:July 16, 2026
Updated:August 04, 2026
Kiota is an OpenAPI based HTTP Client code generator. Prior to 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 1.32.5.
Affected Packages
Microsoft.OpenApi.Kiota.Builder (DOT_NET):
Affected version(s) >=0.2.0.0 <1.32.5Fix Suggestion:
Update to version 1.32.5Microsoft.OpenApi.Kiota (DOT_NET):
Affected version(s) >=0.1.0.0 <1.32.5Fix Suggestion:
Update to version 1.32.5https://github.com/microsoft/kiota.git (GITHUB):
Affected version(s) >=v0.0.1 <v1.32.5Fix Suggestion:
Update to version v1.32.5microsoft.openapi.kiota.builder (NUGET):
Affected version(s) >=0.2.0-preview <1.32.5Fix Suggestion:
Update to version 1.32.5microsoft.openapi.kiota (NUGET):
Affected version(s) >=0.1.0-preview <1.32.5Fix Suggestion:
Update to version 1.32.5microsoft.openapi.kiota.builder (NUGET):
Affected version(s) >=0.2.0-preview <1.32.5Fix Suggestion:
Update to version 1.32.5microsoft.openapi.kiota (NUGET):
Affected version(s) >=0.1.0-preview <1.32.5Fix Suggestion:
Update to version 1.32.5Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
EPSS
Base Score:
1.27