High severity · published Jul 16, 2026
CVE-2026-59862
Kiota: Code Generation Literal Injection in the Python Generator
7.5
CVSS
1.4%
EPSS
No
On KEV
Description
Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.0, Kiota's Python generator let attacker-controlled enum value descriptions from x-ms-enum.values[].description flow through KiotaBuilder.SetEnumOptions into Documentation.DescriptionTemplate and PythonConventionService.RemoveInvalidDescriptionCharacters without newline sanitization, allowing generated inline comments to split and execute attacker-controlled Python code at module scope when generated modules were imported. This issue is fixed in version 1.29.1 and 1.32.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
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-2026-59862
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-59862
github.com
https://github.com/microsoft/kiota/releases/tag/v1.32.0
github.com
https://github.com/microsoft/kiota/security/advisories/GHSA-7f3j-j7jj-r3vr
More from kiota
9.3
CVE-2026-59866
Kiota: Arbitrary file write + code-injection via x-ms-kiota-info clientClassName and clientNamespaceName
9.3
CVE-2026-59864
Kiota: Path/URL injection into generated Copilot plugin manifest via x-ai-* extensions
9.3
CVE-2026-59865
Kiota: Command injection via x-ms-kiota-info dependencyInstallCommand surfaced by `kiota info`
8.8
CVE-2026-105796
Kiota: Code injection through doc-comment delimiter reformation in Kiota Java and PHP generators
8.7
CVE-2026-59859
Kiota: Code Generation Literal Injection in the PHP Generator