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CVE-2026-59863GHSA-4RJ6-VRWV-WR8M

Kiota: Workspace-config poisoning: out-of-repo file write + generation-time SSRF

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: no
  • Technical impact: partial

Summary

Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.5, Kiota honored a poisoned .kiota/workspace.json workspace configuration without validating per-client or per-plugin outputPath values during kiota client generate and kiota plugin generate, allowing a malicious repository or pull request to use absolute paths, rooted POSIX / paths, UNC \\ or // paths, Windows drive X:\ paths, or .. traversal segments to write generated client files outside the workspace root on a developer or CI host. This issue is fixed in version 1.29.1 and 1.32.5.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  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