Critical 9.3Published Jul 16, 2026

CVE-2026-59864Kiota: Path/URL injection into generated Copilot plugin manifest via x-ai-* extensions

Updated under an hour ago (Oct 27, 2026, 10:00 PM ET)

Does this affect you?

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

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

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 1.32.5, `kiota plugin add` and `kiota plugin generate` (with `-t APIPlugin`) emitted attacker-controlled static_template.file values from x-ai-adaptive-card and x-ai-capabilities into generated Microsoft 365 Copilot and Teams plugin manifests without path validation, allowing ../, absolute, rooted, UNC, Windows drive, or URI paths in response_semantics.static_template.file to cause path traversal or out-of-package file inclusion when the generated plugin was deployed. This issue is fixed in version 1.29.1 and 1.32.5.

CVSS: 9.3 CRITICAL (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-22, CWE-829
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-4jwf-m4wg-8p66	x-refsource-confirm
https://github.com/microsoft/kiota/pull/7892	x-refsource-misc
https://github.com/microsoft/kiota/commit/9a185994a4e549b7bba3cc2beffb9736aa902e79	x-refsource-misc
https://github.com/microsoft/kiota/releases/tag/v1.32.5	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.