PT-2026-60478 · Microsoft · Kiota

CVE-2026-59859 · Published 2026-07-16 · Updated 2026-07-16

NVD

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.32.4, Kiota's PHP generator embedded OpenAPI description, default fields, property names, and other schema-derived strings into PHP double-quoted literals through SanitizeDoubleQuote() in Writers/StringExtensions.cs without escaping $, allowing attacker-controlled ${...}, $var, or {$obj->prop} interpolation constructs to inject arbitrary PHP code into generated model and request-builder classes. This issue is fixed in version 1.32.4.

Fix

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

CVE-2026-59859

Affected Products

Kiota

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-59859 · Security Note
• https://github.com/microsoft/kiota/security/advisories/GHSA-jqwh-526h-c92j · Note
• https://github.com/microsoft/kiota/commit/5e2a211ac4261988fbdc72c3b268596ea8837b87 · Note
• https://github.com/microsoft/kiota/pull/7863 · Note
• https://github.com/microsoft/kiota/releases/tag/v1.32.4 · Note