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CVE-2026-59862

32
FAUCET Score

Kiota is an OpenAPI based HTTP Client code generator. Prior to 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 1.32.0.

First published: Jul 16, 2026Last modified: Jul 16, 2026

Impacted Technologies

VendorProductVersion(s)CPE
MicrosoftKiota
< 1.32.0CNA affected

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.02%
Probability of exploitation in next 30 days
EPSS Percentile
59.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0102 is in the 36th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

nugetpatch availablevia ghsa
Product: Microsoft.OpenAPI.KiotaFixed in: 1.32.0
nugetpatch availablevia ghsa
Product: Microsoft.OpenAPI.Kiota.BuilderFixed in: 1.32.0

Vendor Advisories (1)

nugetGHSA-7f3j-j7jj-r3vrhigh

Microsoft Kiota: Code Generation Literal Injection in Kiota Python Generator

Jul 24, 2026

References

github.com / microsoft/kiota/releases/tag/v1.32.0
github.com / microsoft/kiota/security/advisories/GHSA-7f3j-j7jj-r3vr