High 8.7Published Jul 16, 2026

CVE-2026-59860Kiota: XML Doc-Comment Newline Breakout Code Injection

Updated under an hour ago (Oct 27, 2026, 1:50 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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Every CVE for microsoft kiota

Exploited in the last 30 days

Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.3, Kiota is affected by a code-generation injection vulnerability in the C# XML documentation-comment sink (the description, externalDocs label, and externalDocs link fields emitted as /// … comments). When text from an OpenAPI description is written into single-line XML doc comments without stripping newline and Unicode line-terminator characters, an attacker can break out of the /// comment line and inject additional code into generated C# clients. This issue is fixed in version 1.29.1 and 1.32.3.

CVSS: 8.7 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-94
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

References

https://github.com/microsoft/kiota/security/advisories/GHSA-3hrf-2gc2-mx32	x-refsource-confirm
https://github.com/microsoft/kiota/pull/7831	x-refsource-misc
https://github.com/microsoft/kiota/commit/ebb632db90aa8e3c20949337d9faa2720d64ca44	x-refsource-misc
https://github.com/microsoft/kiota/releases/tag/v1.32.3	x-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.