CVE-2026-59864 PUBLISHED

Kiota: Path/URL injection into generated Copilot plugin manifest via x-ai-* extensions

Assigner: GitHub_M
Reserved: 07.07.2026 Published: 16.07.2026 Updated: 16.07.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 9.3

Product Status

Vendor microsoft
Product kiota
Versions
  • Version < 1.32.5 is affected

References

Problem Types

  • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE
  • CWE-829: Inclusion of Functionality from Untrusted Control Sphere CWE