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CVE-2026-59864GHSA-4JWF-M4WG-8P66

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

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 1.31.1, 1.29.1, 1.32.5
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: total

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.

Timeline

  1. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: total

  2. CVE published
  3. Record last updated

Affected versions

  • microsoft kiota

    From 1.30.0 · fixed in 1.31.1; fixed in 1.29.1

  • Microsoft.OpenApi.KiotaNuGet

    From 1.30.0 · fixed in 1.32.5

  • Microsoft.OpenApi.Kiota.BuilderNuGet

    From 1.30.0 · fixed in 1.32.5

  • Microsoft.OpenApi.KiotaNuGet

    fixed in 1.29.1

  • Microsoft.OpenApi.Kiota.BuilderNuGet

    fixed in 1.29.1

References 4

GitHub · microsoft/kiota