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CVE-2026-59863— Kiota: Workspace-config poisoning: out-of-repo file write + generation-time SSRF

Quick assessment

Affected
microsoft kiota
Exploitation
Public or AI PoC available; prioritize validation
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API平台生成工具。 Microsoft Kiota 1.32.5之前版本存在路径遍历漏洞，该漏洞源于未验证工作区配置文件中的outputPath值，允许恶意仓库或拉取请求使用绝对路径、根路径、UNC路径、Windows驱动器路径或路径遍历段在开发或CI主机的工作区根目录之外写入生成的客户端文件。

CVSS 7.0 · High EPSS 1.37% · P71

Affected Version Matrix 2

VendorProduct Version RangeStatus
microsoft kiota >= 1.30.0, < 1.31.1 affected
< 1.29.1 affected
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I. Basic Information for CVE-2026-59863

Vulnerability Information
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Vulnerability Title
Kiota: Workspace-config poisoning: out-of-repo file write + generation-time SSRF
Source: CVE Program / CVE List V5
Vulnerability Description
Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.5, Kiota honored a poisoned .kiota/workspace.json workspace configuration without validating per-client or per-plugin outputPath values during kiota client generate and kiota plugin generate, allowing a malicious repository or pull request to use absolute paths, rooted POSIX / paths, UNC \\ or // paths, Windows drive X:\ paths, or .. traversal segments to write generated client files outside the workspace root on a developer or CI host. This issue is fixed in version 1.29.1 and 1.32.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:L/SC:N/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API平台生成工具。 Microsoft Kiota 1.32.5之前版本存在路径遍历漏洞，该漏洞源于未验证工作区配置文件中的outputPath值，允许恶意仓库或拉取请求使用绝对路径、根路径、UNC路径、Windows驱动器路径或路径遍历段在开发或CI主机的工作区根目录之外写入生成的客户端文件。
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, < 1.31.1 -

II. Public POCs for CVE-2026-59863

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Qwen3.6-35B-A3B · 8119 chars
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III. Intelligence Information for CVE-2026-59863

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Patches & Fixes for CVE-2026-59863 (2)

Vendor Advisories for CVE-2026-59863 (1)

Vendor Pages for CVE-2026-59863 (1)

Same Patch Batch · microsoft · 2026-07-16 · 20 CVEs total

CVE-2026-59865 9.3 CRITICAL Kiota: Command injection via x-ms-kiota-info dependencyInstallCommand surfaced by `kiota i
CVE-2026-59866 9.3 CRITICAL Kiota: Arbitrary file write + code-injection via x-ms-kiota-info clientClassName and clien
CVE-2026-59864 9.3 CRITICAL Kiota: Path/URL injection into generated Copilot plugin manifest via x-ai-* extensions
CVE-2026-59860 8.7 HIGH Kiota: XML Doc-Comment Newline Breakout Code Injection
CVE-2026-59859 8.7 HIGH Kiota: Code Generation Literal Injection in the PHP Generator
CVE-2026-57206 8.6 HIGH SimpleChat plugin validation endpoints missing authentication and authorization
CVE-2026-59117 7.5 HIGH Windows Terminal Remote Code Execution Vulnerability
CVE-2026-59861 7.5 HIGH Kiota: Code Generation Literal Injection in Kiota Ruby Generator
CVE-2026-59862 7.5 HIGH Kiota: Code Generation Literal Injection in the Python Generator
CVE-2026-53598 7.5 HIGH Prompty: Arbitrary File Read via ${file:path} Reference Expansion
CVE-2026-59867 7.1 HIGH Kiota: Generation-time SSRF + remote/local file inclusion via unrestricted $ref
CVE-2026-58598 7.0 HIGH Windows Backup Service Elevation of Privilege Vulnerability
CVE-2026-55440 6.5 MEDIUM Microsoft UFO: COMMAND_RESULTS handler creates unowned sessions, allowing authenticated se
CVE-2026-58643 6.1 MEDIUM Windows Admin Center Spoofing Vulnerability
CVE-2026-62826 4.6 MEDIUM Microsoft SharePoint Server Spoofing Vulnerability
CVE-2026-57205 4.3 MEDIUM SimpleChat: Authenticated users can access other users' profile metadata through user IDOR
CVE-2026-54568 4.3 MEDIUM Microsoft UFO: Missing Authorization in DEVICE_INFO_REQUEST Allows a DEVICE Client to Read
CVE-2026-54733 moodle-local_o365: Authentication bypass via unverified JWT signature in Teams SSO endpoin
CVE-2026-53597 Prompty: Arbitrary code execution via JavaScript frontmatter in TypeScript loader

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-59863

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