CVE-2025-34111Public exploitNetwork attack vector

Unauthenticated code execution via unrestricted PHP upload

Published Jul 15, 2025 · Updated May 15, 2026

Unrestricted file upload in Tiki Wiki CMS Groupware 15.1 and earlier allows remote attackers to execute PHP as the web server. The bundled ELFinder 2.0 connector.minimal.php accepts multipart uploads without checking file extensions or content types and stores executable PHP in a web-accessible directory. No authentication or user interaction is required; exposure of /vendor_extra/elfinder/ permits arbitrary code execution with the web server account's privileges.

CVSS severity9.3
Critical
EPSS probability2.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Tiki Wiki CMS Groupware 15.1 and earlier allows remote attackers to execute PHP as the web server. The bundled ELFinder 2.0 connector.minimal.php accepts multipart uploads without checking file extensions or content types and stores executable PHP in a web-accessible directory. No authentication or user interaction is required; exposure of /vendor_extra/elfinder/ permits arbitrary code execution with the web server account's privileges.

The record

CVE
CVE-2025-34111
Published
Jul 15, 2025
Updated
May 15, 2026
Vendor
Tiki Software Community Association
Product
Tiki Wiki CMS Groupware
Classifications
CWE-434, CWE-20, CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 15, 2025CVE publishedPublication date reported by the CVE source.
  2. May 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=15.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Tiki Software Community Association · Tiki Wiki CMS Groupwareversion=0 <=15.1

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3VulnCheckCVSS: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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CWE-20Improper Input Validation
CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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