---
cve: "CVE-2026-93870"
severity: "MEDIUM"
cvss: 5.3
epss: "0.2%"
vendor: "Cotonti"
kev: false
exploited: false
published: "2026-09-18 20:17:34"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-28T04:03:58+02:00"
---

# CVE-2026-93870

> 5.3 MEDIUM · 🧪 PoC

## Beschreibung

Cotonti through 1.0.0 fails to validate anti-CSRF tokens in the ratings plugin AJAX handler, allowing attackers to forge ratings on behalf of authenticated users. Attackers can craft malicious pages that auto-submit POST requests to modify stored rating data when visited by logged-in users.

## CISA-Anreicherung (vulnrichment/ADP)

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

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/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 |

## Patch verfügbar (OSV)

- 0d554e939a315e7f7f18fba3ca1132b80c6a1adb (Commit)

## Referenzen

- <https://github.com/Cotonti/Cotonti/issues/1892>
- <https://github.com/Cotonti/Cotonti/pull/1900>
- <https://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/ratings/ratings.ajax.php>
- <https://github.com/Cotonti/Cotonti>
- <https://www.vulncheck.com/advisories/cotonti-through-1.0.0-cross-site-request-forgery-in-the-ratings-plugin-ajax-handler>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-93870) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_