What’s Vulnerable › Vulnerabilities

CVE-2026-59862: Kiota: Code Generation Literal Injection in the Python Generator

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-16 · updated 2026-10-24
• Weakness: CWE-94

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.

Affected products

• microsoft kiota: from 1.30.0, < 1.31.1; before 1.29.1

References

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

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