High 7.0Published Jul 16, 2026

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

Updated under an hour ago (Oct 26, 2026, 12:00 PM ET)

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It affects microsoft kiota. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 7.0 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-22
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Aug 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

microsoft kiota microsoft:kiota (from the name)	from 1.30.0, < 1.31.1; before 1.29.1	CNA record

References

https://github.com/microsoft/kiota/security/advisories/GHSA-4rj6-vrwv-wr8mx-refsource-confirm
https://github.com/microsoft/kiota/pull/7885x-refsource-misc
https://github.com/microsoft/kiota/commit/4049327872db7846ace35c9003774d3e3878e4e9x-refsource-misc
https://github.com/microsoft/kiota/releases/tag/v1.32.5x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.