---
cve: "CVE-2026-59822"
severity: "HIGH"
cvss: 8.8
epss: "30%"
vendor: "berriai"
kev: false
exploited: false
published: "2026-07-08 20:16:57"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-14T01:27:05+02:00"
---

# CVE-2026-59822

> 8.8 HIGH · 🧪 PoC

## Beschreibung

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.84.0, LiteLLM's MCP Streamable HTTP endpoint allowed an unauthenticated attacker to use a fabricated Authorization header to trigger an OAuth2 passthrough fallback path that replaced failed LiteLLM key validation with an empty UserAPIKeyAuth() object, allowing requests to reach MCP tooling without a valid LiteLLM key. This issue is fixed in version 1.84.0.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- e1fc955464bf493c15aef08f98e0e22bdf24d4cf (Commit)
- 73869f0faf7d11ee21adcb5f91b8c33a340b6c2c (Commit)

## Referenzen

- <https://github.com/BerriAI/litellm/security/advisories/GHSA-7488-6r32-c95q>
- <https://github.com/BerriAI/litellm/pull/26463>
- <https://github.com/BerriAI/litellm/commit/73869f0faf7d11ee21adcb5f91b8c33a340b6c2c>
- <https://github.com/BerriAI/litellm/releases/tag/v1.84.0>
- <https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-59822>
- <https://www.wiz.io/blog/ai-infrastructure-honeypot>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-59822) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_