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CVE-2025-34113 is an authenticated command/code injection vulnerability in Tiki Wiki CMS affecting versions 14.1 and earlier, 12.4 LTS and earlier, 9.10 LTS and earlier, and 6.14 LTS and earlier. The issue is exposed through the viewmode GET parameter in tiki-calendar.php. When the calendar module is enabled and the attacker is authenticated with permission to access the calendar functionality, crafted input to viewmode can be used to inject and execute arbitrary PHP code. Successful exploitation results in remote code execution within the security context of the web server process.
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tiki-calendar.php and related calendar functionality to only strictly necessary trusted users. Reduce exposure by limiting authenticated access, enforcing least privilege on calendar permissions, and placing administrative or sensitive application components behind additional access controls. Deploy WAF or reverse-proxy rules to block suspicious requests containing malicious viewmode values, and monitor logs for anomalous requests to tiki-calendar.php. Ensure the web server account has minimal OS and filesystem privileges to reduce post-exploitation impact.Patch, then assume compromise.
viewmode parameter in tiki-calendar.php to ensure untrusted input cannot be interpreted as executable PHP code. After patching, inspect systems for signs of exploitation, including unexpected PHP files, modified application files, suspicious web server child processes, and anomalous outbound connections.1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module (modules/exploits/linux/http/tiki_calendar_exec.rb) targeting a remote code execution vulnerability in the calendar module of Tiki-Wiki CMS (CVE-2025-34113). The exploit requires valid credentials for a user with calendar access and the calendar module to be enabled. The module authenticates to the application, then sends a specially crafted GET request to tiki-calendar.php with malicious PHP code injected into the 'viewmode' parameter, resulting in arbitrary code execution on the server. The module is weaponized, supporting customizable Metasploit payloads. The code is written in Ruby and leverages the Metasploit framework's HTTP client utilities. Key endpoints include the login and calendar PHP scripts of the Tiki-Wiki CMS instance.
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2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
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