High severity · published Jul 16, 2026
CVE-2026-59863
Kiota: Workspace-config poisoning: out-of-repo file write + generation-time SSRF
7.0
CVSS
1.4%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KI
kiota · microsoft
>= 1.30.0, < 1.31.1; < 1.29.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-59863
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-59863
github.com
https://github.com/microsoft/kiota/commit/4049327872db7846ace35c9003774d3e3878e4e9
github.com
https://github.com/microsoft/kiota/pull/7885
github.com
https://github.com/microsoft/kiota/releases/tag/v1.32.5
github.com
https://github.com/microsoft/kiota/security/advisories/GHSA-4rj6-vrwv-wr8m
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