AIKIDO-2026-696230
Microsoft.OpenApi.Kiota is vulnerable to Path Traversal
67
Medium Risk
This Affects:
Microsoft.OpenApi.KiotaTL;DR
A path traversal vulnerability allowed attacker-controlled consumer identifiers (and related file reference/config keys) to escape the intended .kiota/documents namespace, enabling overwriting another consumer’s cached OpenAPI description. The fix adds strict validation of consumer identifiers/extensions, canonicalizes paths with GetFullPath, performs containment checks to prevent escaping the documents directory, and hardens file-reference parsing against percent-encoding/double-encoding, control chars (including NUL), and Unicode normalization bypasses.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
Microsoft.OpenApi.Kiota is vulnerable to Path Traversal in versions 1.15.0 - 1.33.0.
How to fix this
Upgrade the Microsoft.OpenApi.Kiota library to the patch version.
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SOC 2Compliant
ISO 27001Compliant