---
cve: "CVE-2026-42208"
severity: "CRITICAL"
cvss: 9.3
epss: "89.4%"
vendor: "berriai"
kev: true
exploited: true
published: "2026-05-08 04:16:19"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T17:35:18+02:00"
---

# CVE-2026-42208

> 9.3 CRITICAL · ⚠️ CISA KEV (118 Tage) · 🔓 Exploited · 🧪 PoC

## Beschreibung

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. From version 1.81.16 to before version 1.83.7, a database query used during proxy API key checks mixed the caller-supplied key value into the query text instead of passing it as a separate parameter. An unauthenticated attacker could send a specially crafted Authorization header to any LLM API route (for example POST /chat/completions) and reach this query through the proxy's error-handling path. An attacker could read data from the proxy's database and may be able to modify it, leading to unauthorised access to the proxy and the credentials it manages. This issue has been patched in version 1.83.7.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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 |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- e0d5c28db02b3219dbd944666a55f49732197922 (Commit)

## Referenzen

- <https://github.com/BerriAI/litellm/security/advisories/GHSA-r75f-5x8p-qvmc>
- <https://github.com/BerriAI/litellm/releases/tag/v1.83.7-stable>
- <https://access.redhat.com/security/cve/CVE-2026-42208>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2463965>
- <https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42208.json>
- <https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-42208>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-42208) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_