Reported vulnerability

TimThumb <= 1.33 - Remote File Download

Published 1 Aug 2011

Updated 22 Jan 2024

CVE-2011-4106

Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.

Does this affect my version?

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Category List Portfolio Page (plugin)

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Wordfence advisory

critical · CVSS 9.8

TimThumb (timthumb.php) before 2.0 does not validate the entire source with the domain white list, which allows remote attackers to upload and execute arbitrary code via a URL containing a white-listed domain in the src parameter, then accessing it via a direct request to the file in the cache directory, as exploited in the wild in August 2011. Note: this is not a WordPress plugin or theme, but may be used by WordPress plugins and themes. Make sure to check for the presence of the timthumb.php file when determining if your installation is vulnerable.

Severity vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Category List Portfolio Page

Software
plugin · category-list-portfolio-page
Affected versions
Start version unspecified, no upper version specified
Fix availability
No fix reported
Fixed versions
No fixed version specified

Recommended action

No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.

TimThumb

Software
plugin · timthumb
Affected versions
Start version unspecified, before 2.0
Fix availability
Fix available
Fixed versions
2.0

Recommended action

Update to version 2.0, or a newer patched version

Simple Post Thumbnails

Software
plugin · simple-post-thumbnails
Affected versions
Start version unspecified, no upper version specified
Fix availability
No fix reported
Fixed versions
No fixed version specified

Recommended action

No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.

Further references (1)
Data sources and licences

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Copyright 1999-2026 The MITRE Corporation

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Read licence terms

Source: Wordfence

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Questions about this vulnerability

How do I check which product and version this report affects?

This report covers more than one product. Choose your plugin, theme or WordPress core in the version checker, then enter its installed version. Each product has its own affected ranges and fix details in the report above.

Which update should I install?

Find your exact product in the report and read its fixed versions and recommended action. Fix details for one product do not apply to every product covered by this advisory. Follow the linked source when no fixed version is specified.

Does an affected version mean my website has been hacked?

An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.

Does a version outside these ranges mean my website is secure?

A version outside the reported ranges is not listed as affected by this particular issue. Other vulnerabilities, missing information or a previous compromise still need separate checks. Review other reports for your product and keep your website maintained.

These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.

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