CVE-2025-34113: Input Validation Flaw

Description

An authenticated command injection vulnerability exists in Tiki Wiki CMS versions ≤14.1, ≤12.4 LTS, ≤9.10 LTS, and ≤6.14 via the `viewmode` GET parameter in `tiki-calendar.php`. When the calendar module is enabled and an authenticated user has permission to access it, an attacker can inject and execute arbitrary PHP code. Successful exploitation leads to remote code execution in the context of the web server user.

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Weakness Type (CWE)

CWE-20 Improper Input Validation

CWE-78 OS Command Injection

CWE-306 Missing Authentication

References

Other References

https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/linux/http/tiki_calendar_exec.rb https://tiki.org/article414-Important-Security-Fix-for-all-versions-of-Tiki https://www.acunetix.com/vulnerabilities/web/tiki-wiki-cms-remote-code-execution-via-calendar-module/ https://www.exploit-db.com/exploits/39965 https://www.vulncheck.com/advisories/tiki-wiki-cms-authenticated-command-injection-in-calendar-module

Frequently Asked Questions

What is CVE-2025-34113? +

An authenticated command injection vulnerability exists in Tiki Wiki CMS versions ≤14.1, ≤12.4 LTS, ≤9.10 LTS, and ≤6.14 via the `viewmode` GET parameter in `tiki-calendar.php`. When the calendar module is enabled and an authenticated user has permission to access it, an attacker can inject and execute arbitrary PHP code. Successful exploitation leads to remote code execution in the context of the web server user.

How do I check if I'm vulnerable to CVE-2025-34113? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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