---
cve: "CVE-2026-92789"
severity: "HIGH"
cvss: 7.1
epss: "0.4%"
vendor: "Graylog2"
kev: false
exploited: false
published: "2026-09-16 21:17:28"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-01T20:20:10+02:00"
---

# CVE-2026-92789

> 7.1 HIGH · 🧪 PoC

## Beschreibung

Graylog through 7.1.4 validates outbound URLs against an allowlist before making requests but fails to re-validate after following HTTP redirects. Attackers with lookup table or event notification permissions can craft allowlisted endpoints that redirect to internal services, enabling the server to fetch and return internal responses.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 09a50652ae55181358cd53372b5a58ef872d451e (Commit)

## BSI-Hinweise (deutsch)

- [Graylog: Schwachstelle ermöglicht Offenlegung von Informationen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-3421) — _BSI-Einstufung: mittel_
  Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Graylog ausnutzen, um Informationen offenzulegen.

## Referenzen

- <https://github.com/Graylog2/graylog2-server/issues/26591>
- <https://github.com/Graylog2/graylog2-server>
- <https://github.com/Graylog2/graylog2-server/blob/abb14d1/graylog2-server/src/main/java/org/graylog2/lookup/adapters/HTTPJSONPathDataAdapter.java#L158-L195>
- <https://www.vulncheck.com/advisories/graylog-through-7.1.4-server-side-request-forgery-via-http-redirect>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-92789) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_