Microsoft Kiota up to 1.34.x Plugin Manifest path traversal

Summaryinfo

A vulnerability was found in Microsoft Kiota up to 1.34.x. It has been declared as problematic. This issue affects some unknown processing of the component Plugin Manifest. Such manipulation of the argument x-ai-capabilities.response_semantics.oauth_card_path leads to path traversal. This vulnerability is listed as CVE-2026-105795. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Microsoft Kiota up to 1.34.x. Affected by this issue is some unknown processing of the component Plugin Manifest. The manipulation of the argument x-ai-capabilities.response_semantics.oauth_card_path with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is integrity. CVE summarizes:

Kiota is an OpenAPI based HTTP Client code generator. From 1.25.1 until 1.35.0, Kiota copies x-ai-capabilities.response_semantics.oauth_card_path from an attacker-controlled or compromised OpenAPI description into a generated API plugin manifest without validating that the value is a safe package-relative file reference. Parent-directory traversal, rooted paths, or absolute URIs can therefore reach a consuming host that resolves the reference, allowing the host to cross the intended plugin-package boundary or use an unintended authentication card. Kiota does not itself read a local file or execute code merely while generating the manifest, and impact requires downstream resolution of the unsafe reference. This issue is fixed in version 1.35.0.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-105795 since 10/05/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/06/2026). The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 1.35.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-93424). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Microsoft

Name

• Kiota

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28
• 1.29
• 1.30
• 1.31
• 1.32
• 1.33
• 1.34

License

• commercial

Website

• Vendor: https://www.microsoft.com/
• Product: https://github.com/microsoft/kiota/

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Once again VulDB remains the best source for vulnerability data.

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