---
cve: "CVE-2026-84857"
severity: "MEDIUM"
cvss: 6.9
epss: "0.6%"
vendor: "sigoden"
kev: false
exploited: false
published: "2026-09-02 20:17:42"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-04T06:45:56+02:00"
---

# CVE-2026-84857

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

A flaw has been found in sigoden aichat up to 0.30.4. This affects an unknown function of the file src/serve.rs of the component API Endpoint. This manipulation causes uncontrolled memory allocation. The attack can be initiated remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **yes**
  - Technical Impact: **partial**

## CVSS-Vektor

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

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

## Referenzen

- <https://vuldb.com/vuln/398132>
- <https://vuldb.com/vuln/398132/cti>
- <https://vuldb.com/cve/CVE-2026-84857>
- <https://vuldb.com/submit/886265>
- <https://github.com/outlookgp/CVE/tree/main/AIChat_Serve_Request_Body_DoS_Report>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-84857) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_