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CVE-2026-73851— Kiota: Path traversal in generated plugin manifest static_template.file reference (percent-encoding bypass)

Quick assessment

Affected
microsoft kiota
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Kiota是美国Microsoft公司的一款API平台生成工具。 Microsoft Kiota 1.29.1之前版本和1.30.0至1.34.0之前版本存在安全漏洞，该漏洞源于对OpenAPI描述文件中的文件引用验证不当，可能导致攻击者控制或篡改OpenAPI描述，从而包含或泄露清单包边界外的文件。

CVSS 6.1 · Medium EPSS 1.48% · P72

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 2

VendorProduct Version RangeStatus
microsoft kiota >= 1.30.0, < 1.34.0 affected
< 1.29.1 affected
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I. Basic Information for CVE-2026-73851

Vulnerability Information
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Vulnerability Title
Kiota: Path traversal in generated plugin manifest static_template.file reference (percent-encoding bypass)
Source: CVE Program / CVE List V5
Vulnerability Description
Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.34.0, an attacker who controls or tampers with the OpenAPI description consumed by Kiota can supply a file reference that resolves outside the manifest package (e.g. ../../../../etc/passwd, an absolute path, or a file:// / http(s):// URI). When the generated manifest is deployed and consumed by an AI host, this can lead to inclusion or disclosure of files outside the intended package boundary. This vulnerability is fixed in 1.29.1 and 1.34.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Kiota 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Kiota是美国Microsoft公司的一款API平台生成工具。 Microsoft Kiota 1.29.1之前版本和1.30.0至1.34.0之前版本存在安全漏洞，该漏洞源于对OpenAPI描述文件中的文件引用验证不当，可能导致攻击者控制或篡改OpenAPI描述，从而包含或泄露清单包边界外的文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
microsoft kiota >= 1.30.0, < 1.34.0 -

II. Public POCs for CVE-2026-73851

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III. Intelligence Information for CVE-2026-73851

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Patches & Fixes for CVE-2026-73851 (4)

Vendor Advisories for CVE-2026-73851 (1)

News Coverage for CVE-2026-73851 (1)

Vendor Pages for CVE-2026-73851 (2)

IV. Related Vulnerabilities

Same product: kiota
Same vendor: microsoft
Same weakness: CWE-22

V. Comments for CVE-2026-73851

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