SCA: security update for Microsoft.OpenAPI.Kiota, Microsoft.OpenAPI.Kiota.Builder, Microsoft.OpenApi.Kiota, Microsoft.OpenApi.Kiota.Builder (GHSA-xg2h-5xr2-29jw)

high Tenable Cloud Security Plugin ID 445276

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.0, Kiota's Ruby generator
embedded OpenAPI default fields, property names, and other schema-derived strings through
CodeMethodWriter.cs and SanitizeForQuotedLiteral() in Writers/StringExtensions.cs into Ruby double-quoted
literals without escaping #, allowing attacker-controlled #{expr}, #$var, or #@var interpolation markers
to inject arbitrary Ruby code into generated model classes. This issue is fixed in version 1.29.1 and
1.32.0. (CVE-2026-59861)

Solution

Update the Microsoft.OpenApi.Kiota library and its related packages to version 1.29.1 or later.

Plugin Details

Severity: High

ID: 445276

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 7/24/2026

Updated: 8/17/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.78

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-59861

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/24/2026

Vulnerability Publication Date: 7/16/2026

Reference Information

CVE: CVE-2026-59861

cwe: CWE-94

Detections

Analytics