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Vulnerability record · CVE-2026-59863 · published 16 July 2026

CVE-2026-59863: Path traversal vulnerability

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.

7.0 CVSS 4.0 High EPSS 1.4% · top 29.1% CWE-22 · Path traversal Deferred
7.0CVSS 4.0 base score
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
17 Aug 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
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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Source: NIST National Vulnerability Database (record CVE-2026-59863), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.