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`.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.00%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 4.0
- 8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 3.00% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20, CWE-78, CWE-306
- Source
- disclosure@vulncheck.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.