---
cve: "CVE-2026-52777"
severity: "CRITICAL"
cvss: 9.4
epss: "0.2%"
vendor: "YesWiki"
kev: false
exploited: false
published: "2026-09-04 23:51:46"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T03:51:51+02:00"
---

# CVE-2026-52777

> 9.4 CRITICAL · 🧪 PoC

## Beschreibung

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, there is an authenticated PHP object injection vulnerability in BazarImportAction via unserialize. This issue has been patched in version 4.6.6.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |

## Patch verfügbar (OSV)

- 8f70a8d6b8befa0e644d03c785701dbbc55b8fd0 (Commit)
- fa81922f4103630911cbea98ead3c4b7bc786e19 (Commit)

## Referenzen

- <https://github.com/YesWiki/yeswiki/security/advisories/GHSA-9369-69wj-7m2f>
- <https://github.com/YesWiki/yeswiki/commit/8f70a8d6b8befa0e644d03c785701dbbc55b8fd0>
- <https://github.com/YesWiki/yeswiki/releases/tag/v4.6.6>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-52777) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_