critical

CVE-2026-59864

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

Published 16 Jul 2026Modified 24 Oct 2026CWE 22, 829

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

GHSA9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Trivy's own label is CRITICAL. Rated critical by GHSA.

Description

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.

Affected packages and fixed versions

Source	Package	Fixed in
nuget::GitHub Security Advisory NuGet	Microsoft.OpenApi.Kiota, Microsoft.OpenApi.Kiota.Builder, microsoft.openapi.kiota and 1 more	1.32.5, 1.29.1

Show all 4 entries from 1 source

Source	Package	Fixed in
nuget::GitHub Security Advisory NuGet	Microsoft.OpenApi.Kiota	1.32.5, 1.29.1
nuget::GitHub Security Advisory NuGet	Microsoft.OpenApi.Kiota.Builder	1.32.5, 1.29.1
nuget::GitHub Security Advisory NuGet	microsoft.openapi.kiota	1.32.5, 1.29.1
nuget::GitHub Security Advisory NuGet	microsoft.openapi.kiota.builder	1.32.5, 1.29.1

References

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