CVE-2018-25158Public exploitNetwork attack vector

Authenticated code execution via elFinder file renaming

Published Feb 20, 2026 · Updated Feb 20, 2026

Arbitrary file upload in Chamilo LMS 1.11.8 allows remote authenticated users to execute PHP code through the elFinder module. The social myfiles workflow accepts a file bearing an image header, then elFinder permits its extension to be renamed to PHP in a web-accessible directory. Any registered account that can reach this workflow can execute code with the web server process's privileges by requesting the renamed file.

CVSS severity8.7
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in Chamilo LMS 1.11.8 allows remote authenticated users to execute PHP code through the elFinder module. The social myfiles workflow accepts a file bearing an image header, then elFinder permits its extension to be renamed to PHP in a web-accessible directory. Any registered account that can reach this workflow can execute code with the web server process's privileges by requesting the renamed file.

The record

CVE
CVE-2018-25158
Published
Feb 20, 2026
Updated
Feb 20, 2026
Vendor
Chamilo
Product
Chamilo LMS
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 20, 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=Chamilo 1.11.8 or lower to 1.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Chamilo · Chamilo LMSversion=Chamilo 1.11.8 or lower to 1.8

Published CVSS scores

8.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Server Software Component: Web Shell

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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