CVE-2011-4906Public exploitNetwork attack vector

Unauthenticated PHP code execution via upload renaming

Published Feb 12, 2020 · Updated Aug 7, 2024

Unrestricted file upload in Joomla TinyBrowser 1.5.12 allows remote attackers to execute arbitrary PHP code via its web interface. The exposed workflow accepts PHP content under an image extension through upload_file.php, then lets edit.php rename the file with a .php extension under images/stories. Network access without authentication is sufficient, and requesting the renamed file executes code with the web server process's privileges.

CVSS severity9.8
Critical
EPSS probability9.58%
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 Joomla TinyBrowser 1.5.12 allows remote attackers to execute arbitrary PHP code via its web interface. The exposed workflow accepts PHP content under an image extension through upload_file.php, then lets edit.php rename the file with a .php extension under images/stories. Network access without authentication is sufficient, and requesting the renamed file executes code with the web server process's privileges.

The record

CVE
CVE-2011-4906
Published
Feb 12, 2020
Updated
Aug 7, 2024
Vendor
Joomla
Product
TinyBrowser
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 12, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 7, 2024Record 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=1.5.12
  2. Affected versionversion=fixed in 1.5.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Joomla · TinyBrowserversion=1.5.12; version=fixed in 1.5.13

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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
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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