VulnerabilityAnalyzed

CVE-2025-34111

CRITICAL 9.3EPSS 2.18%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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/.

CVSS 4.0: 9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/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: 2.18% probability · 81th percentile
CISA KEV: Not listed
Weakness: CWE-20, CWE-306, CWE-434
Affected: tiki/tikiwiki cms\/groupware
Source: disclosure@vulncheck.com

References

https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/tikiwiki_upload_exec.rbExploit, Third Party Advisory
https://tiki.org/article434-Security-update-Tiki-15-2-Tiki-14-4-and-Tiki-12-9-releasedRelease Notes
https://www.exploit-db.com/exploits/40091Exploit, Third Party Advisory, VDB Entry
https://www.vulncheck.com/advisories/tiki-wiki-el-finder-unauthenticated-file-upload-rceThird Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.