Kiota: Arbitrary file write + code-injection via x-ms-kiota-info clientClassName and clientNamespaceName

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-59866 · Microsoft / collected KEV context

GHSA-4vv7-jj25-4gh6

cve-program · CVE-2026-59866

• https://github.com/microsoft/kiota/security/advisories/GHSA-4vv7-jj25-4gh6
• https://github.com/microsoft/kiota/pull/7884
• https://github.com/microsoft/kiota/commit/dc812dbbf88ef7edf53a890d36b2f9d1460e947d
• https://github.com/microsoft/kiota/releases/tag/v1.32.5

nvd · CVE-2026-59866

• https://github.com/microsoft/kiota/commit/dc812dbbf88ef7edf53a890d36b2f9d1460e947d
• https://github.com/microsoft/kiota/pull/7884
• https://github.com/microsoft/kiota/releases/tag/v1.32.5
• https://github.com/microsoft/kiota/security/advisories/GHSA-4vv7-jj25-4gh6

osv · GHSA-4vv7-jj25-4gh6

• https://github.com/microsoft/kiota/security/advisories/GHSA-4vv7-jj25-4gh6
• https://nvd.nist.gov/vuln/detail/CVE-2026-59866
• https://github.com/microsoft/kiota/pull/7884
• https://github.com/microsoft/kiota/commit/dc812dbbf88ef7edf53a890d36b2f9d1460e947d
• https://github.com/microsoft/kiota
• https://github.com/microsoft/kiota/releases/tag/v1.32.5

No related operational record is retained in the current change model.