---
cve: "CVE-2026-39783"
severity: "MEDIUM"
cvss: 4.3
epss: "0.2%"
vendor: "WP SYNTEX"
kev: false
exploited: false
published: "2026-10-05 12:17:09"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-24T17:27:46+02:00"
---

# CVE-2026-39783

> 4.3 MEDIUM

## Beschreibung

Missing Authorization vulnerability in WP SYNTEX Polylang polylang allows Retrieve Embedded Sensitive Data.This issue affects Polylang: from n/a through 3.8.7.

## CNA-Record (Kanon, cvelistV5)

- CNA: **Patchstack**
- State: PUBLISHED
- Stand: 2026-10-05 15:28:29
- CNA-CVSS: **4.3** (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)

## CISA-Anreicherung (vulnrichment/ADP)

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

## CVSS-Vektor

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

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

## Schwachstellen-Klasse

- **CWE-862** — Missing Authorization
  The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

## Angriffsmuster (CAPEC)

- [CAPEC-665 — Exploitation of Thunderbolt Protection Flaws](https://capec.mitre.org/data/definitions/665.html) _(Severity: Very High)_

## ATT&CK-Techniken

- [T1211 — Exploitation for Defensive Evasion](https://attack.mitre.org/techniques/T1211/)
- [T1542.002 — Pre-OS Boot: Component Firmware](https://attack.mitre.org/techniques/T1542/002/)
- [T1556 — Modify Authentication Process](https://attack.mitre.org/techniques/T1556/)

## Referenzen

- <https://patchstack.com/database/wordpress/plugin/polylang/vulnerability/wordpress-polylang-plugin-3-8-7-sensitive-data-exposure-vulnerability?_s_id=cve>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-39783/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_