---
cve: "CVE-2026-40471"
severity: "CRITICAL"
cvss: 9.6
epss: "0.2%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2026-04-23 16:16:25"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-27T18:01:37+01:00"
---

# CVE-2026-40471

> 9.6 CRITICAL

## Beschreibung

hackage-server lacked Cross-Site Request Forgery (CSRF) protection across its endpoints. Scripts on foreign sites could trigger requests to hackage server, possibly abusing latent credentials to upload packages or perform other administrative actions. Some unauthenticated actions could also be abused (e.g. creating new user accounts).

## CNA-Record (Kanon, cvelistV5)

- CNA: **redhat-cnalr**
- State: PUBLISHED
- Stand: 2026-04-23 16:22:12
- CNA-CVSS: **9.6** (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L`)

## CISA-Anreicherung (vulnrichment/ADP)

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

## CVSS-Vektor

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

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

## Schwachstellen-Klasse

- **CWE-352** — Cross-Site Request Forgery (CSRF)
  The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

## Angriffsmuster (CAPEC)

- [CAPEC-62 — Cross Site Request Forgery](https://capec.mitre.org/data/definitions/62.html) _(Severity: Very High)_
- [CAPEC-111 — JSON Hijacking (aka JavaScript Hijacking)](https://capec.mitre.org/data/definitions/111.html) _(Severity: High)_
- [CAPEC-462 — Cross-Domain Search Timing](https://capec.mitre.org/data/definitions/462.html) _(Severity: Medium)_
- [CAPEC-467 — Cross Site Identification](https://capec.mitre.org/data/definitions/467.html) _(Severity: Low)_

## Referenzen

- <https://osv.dev/vulnerability/HSEC-2026-0002>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-40471/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_