---
cve: "CVE-2020-36726"
severity: "CRITICAL"
cvss: 9.8
epss: "1.6%"
vendor: "rustaurius"
kev: false
exploited: false
published: "2023-06-07 02:15:12"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-26T07:48:50+01:00"
---

# CVE-2020-36726

> 9.8 CRITICAL

## Beschreibung

The Ultimate Reviews plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 2.1.32 via deserialization of untrusted input in several vulnerable functions. This allows unauthenticated attackers to inject a PHP Object. No POP chain is present in the vulnerable plugin.

## CNA-Record (Kanon, cvelistV5)

- CNA: **Wordfence**
- State: PUBLISHED
- Stand: 2026-04-08 17:27:32
- CNA-CVSS: **9.8** (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| 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-502** — Deserialization of Untrusted Data
  The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

## Angriffsmuster (CAPEC)

- [CAPEC-586 — Object Injection](https://capec.mitre.org/data/definitions/586.html) _(Severity: High)_

## Referenzen

- <https://www.wordfence.com/threat-intel/vulnerabilities/id/db30acd7-ce51-45d9-8ff0-6ceea8237a8c?source=cve>
- <https://blog.nintechnet.com/wordpress-ultimate-reviews-plugin-fixed-insecure-deserialization-vulnerability/>
- <https://plugins.trac.wordpress.org/changeset/2409141>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2020-36726/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_