CVE-2026-59859

Description

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.

References

• https://github.com/microsoft/kiota/commit/5e2a211ac4261988fbdc72c3b268596ea8837b87
• https://github.com/microsoft/kiota/pull/7863
• https://github.com/microsoft/kiota/releases/tag/v1.32.4
• https://github.com/microsoft/kiota/security/advisories/GHSA-jqwh-526h-c92j