---
cve: "CVE-2026-86410"
severity: "HIGH"
cvss: 8.1
epss: "0.8%"
vendor: "curl"
kev: false
exploited: false
published: "2026-10-20 20:17:25"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-11-08T17:58:41+01:00"
---

# CVE-2026-86410

> 8.1 HIGH

## Beschreibung

A flaw in the curl command line tool's logic makes it only set SSH host
verification options when interacting directly using SFTP or SCP, and not as a
result of following a redirect.

## CNA-Record (Kanon, cvelistV5)

- CNA: **curl**
- State: PUBLISHED
- Stand: 2026-10-29 18:36:17

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Schwachstellen-Klasse

- **CWE-297** — Improper Validation of Certificate with Host Mismatch
  The product communicates with a host that provides a certificate, but the product does not properly ensure that the certificate is actually associated with that host.

## Referenzen

- <https://curl.se/docs/CVE-2026-86410.json>
- <https://curl.se/docs/CVE-2026-86410.html>
- <https://hackerone.com/reports/3973176>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-86410/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_