What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.0 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-16 · updated 2026-10-24
• Weakness: CWE-22

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.

Affected products

• microsoft kiota: from 1.30.0, < 1.31.1; before 1.29.1

References

• https://github.com/microsoft/kiota/commit/4049327872db7846ace35c9003774d3e3878e4e9
• https://github.com/microsoft/kiota/pull/7885
• https://github.com/microsoft/kiota/releases/tag/v1.32.5
• https://github.com/microsoft/kiota/security/advisories/GHSA-4rj6-vrwv-wr8m

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