---
cve: "CVE-2026-18660"
severity: "HIGH"
cvss: 8.8
epss: "0.3%"
vendor: "Eclipse Foundation"
kev: false
exploited: false
published: "2026-10-15 10:17:12"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-11-10T03:07:39+01:00"
---

# CVE-2026-18660

> 8.8 HIGH · 🧪 PoC

## Beschreibung

In Eclipse Jetty, across various versions of `jetty-server`, and `jetty-proxy`, the host whitelist/blacklist is case-sensitive, and would allow hosts through that only differ by case.

## CNA-Record (Kanon, cvelistV5)

- CNA: **eclipse**
- State: PUBLISHED
- Stand: 2026-10-15 13:32:37
- CNA-CVSS: **8.8** (`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`)

## 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: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 |

## Schwachstellen-Klasse

- **CWE-178** — Improper Handling of Case Sensitivity
  The product does not properly account for differences in case sensitivity when accessing or determining the properties of a resource, leading to inconsistent results.
- **CWE-918** — Server-Side Request Forgery
  The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

## BSI-Hinweise (deutsch)

- [Eclipse Jetty: Mehrere Schwachstellen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-3992) — _BSI-Einstufung: hoch_
  Ein Angreifer kann mehrere Schwachstellen in Eclipse Jetty ausnutzen, um Dateien zu manipulieren, um Informationen offenzulegen und um Sicherheitsvorkehrungen zu umgehen.

## Referenzen

- <https://github.com/jetty/jetty.project/security/advisories/GHSA-7wfj-j486-mxrf>
- <https://gitlab.eclipse.org/security/cve-assignment/-/work_items/212>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-18660/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_