Unauthenticated File Upload Vulnerability in Tiki Wiki CMS Groupware
CVE-2025-34111

9.3CRITICAL

Key Information:

Vendor

Tiki Software Community Association

Status
Wiki Cms Groupware
Vendor
CVE Published:
15 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-34111?

An unauthenticated arbitrary file upload vulnerability exists in Tiki Wiki CMS Groupware, specifically in versions up to 15.1, through the ELFinder component's default connector. This flaw allows remote attackers to upload and execute malicious PHP scripts on the server. The vulnerability stems from the lack of file type validation, enabling attackers to exploit the ELFinder interface located at /vendor_extra/elfinder/ by crafting a POST request to deploy executable PHP payloads.

Affected Version(s)

Wiki CMS Groupware * <= 15.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-34111 - Proof of Concept

CVE-2025-34111 - Proof of Concept

References

https://tiki.org/article434-Security-update-Tiki-15-2-Tik...
vendor-advisorypatch
https://www.exploit-db.com/exploits/40091
exploit
https://raw.githubusercontent.com/rapid7/metasploit-frame...
exploit

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mehmet Ince
.
CVE-2025-34111 : Unauthenticated File Upload Vulnerability in Tiki Wiki CMS Groupware