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Vulnerability record · CVE-2011-4106 · published 26 October 2013

CVE-2011-4106: Binarymoon timthumb improper input validation vulnerability

Binarymoon · Timthumb

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.

6.8 CVSS 2.0 Medium EPSS 23% · top 2.3% CWE-20 · Improper input validation
6.8CVSS 2.0 base score
23%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References, 6 tagged exploit
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://code.google.com/p/timthumb/issues/detail?id=212 ExploitPatch
http://markmaunder.com/2011/08/01/zero-day-vulnerability-in-many-wordpress-themes/
http://markmaunder.com/2011/08/02/technical-details-and-scripts-of-the-wordpress-timthumb-php-hack/ Patch
http://www.binarymoon.co.uk/2011/08/timthumb-2/
http://www.exploit-db.com/exploits/17602 Exploit
http://www.exploit-db.com/exploits/17872 Exploit
http://www.openwall.com/lists/oss-security/2011/11/03/4
http://code.google.com/p/timthumb/issues/detail?id=212 ExploitPatch
http://markmaunder.com/2011/08/01/zero-day-vulnerability-in-many-wordpress-themes/
http://markmaunder.com/2011/08/02/technical-details-and-scripts-of-the-wordpress-timthumb-php-hack/ Patch
http://www.binarymoon.co.uk/2011/08/timthumb-2/
http://www.exploit-db.com/exploits/17602 Exploit
http://www.exploit-db.com/exploits/17872 Exploit
http://www.openwall.com/lists/oss-security/2011/11/03/4

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2011-4106), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.