CVE-2025-34111

Critical

Description

An unauthenticated arbitrary file upload vulnerability exists in Tiki Wiki CMS Groupware version 15.1 and earlier via the ELFinder component's default connector (connector.minimal.php), which allows remote attackers to upload and execute malicious PHP scripts in the context of the web server. The vulnerable component does not enforce file type validation, allowing attackers to craft a POST request to upload executable PHP payloads through the ELFinder interface exposed at /vendor_extra/elfinder/.

SeverityCritical

CVSS9.8

Exploit probability—

ProductTikiwiki Cms\/groupware

PublishedJul 15, 2025

First seenJul 15, 2025

Weakness typeCWE-434Unrestricted upload of dangerous file type CWE-306Missing authentication for critical function CWE-20Improper input validation

How to fix

Patches

tiki.org/article434-Security-update-Tiki-15-2-Tiki-14-4-and-Tiki-12-9-released

Affected products

Product	Affected versions	Fixed in
tiki tikiwiki_cms\/groupware	v ≤ 15.1	—

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