---
cve: "CVE-2026-59860"
severity: "HIGH"
cvss: 8.7
epss: "1%"
vendor: "Microsoft"
kev: false
exploited: false
published: "2026-07-16 15:16:35"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T08:40:12+02:00"
---

# CVE-2026-59860

> 8.7 HIGH · 🧪 PoC

## Beschreibung

Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.3, Kiota is affected by a code-generation injection vulnerability in the C# XML documentation-comment sink (the description, externalDocs label, and externalDocs link fields emitted as /// … comments). When text from an OpenAPI description is written into single-line XML doc comments without stripping newline and Unicode line-terminator characters, an attacker can break out of the /// comment line and inject additional code into generated C# clients. This issue is fixed in version 1.29.1 and 1.32.3.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |

## Patch verfügbar (OSV)

- 071292ba58e3e2b4e569833ac88b1a7fe4433db7 (Commit)
- 70cd8bcba3ff1815f93187f3eb80ef96fd194d46 (Commit)

## Referenzen

- <https://github.com/microsoft/kiota/security/advisories/GHSA-3hrf-2gc2-mx32>
- <https://github.com/microsoft/kiota/pull/7831>
- <https://github.com/microsoft/kiota/commit/ebb632db90aa8e3c20949337d9faa2720d64ca44>
- <https://github.com/microsoft/kiota/releases/tag/v1.32.3>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-59860) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_