CVE-2009-4418

The unserialize function in PHP 5.3.0 and earlier allows context-dependent attackers to cause a denial of service (resource consumption) via a deeply nested serialized variable, as demonstrated by a string beginning with a:1: followed by many {a:1: sequences.

We have discovered 233,584 live websites that are affected by CVE-2009-4418.

Run a Free Instant Scan



Affected Software

Product  PHP
Category Programming Languages
Vulnerable Domains233,584 live websites (3.37% of PHP install base)
Vulnerable Versions
  • from 0 through 5.3
Vulnerable Versions Count32 versions ( 6.05% of all versions)



Details

  • Published - Dec 24, 2009
  • Updated - Sep 17, 2024

Website Distribution by Country

Number of websites using CVE-2009-4418
United States14,268 websites


Taiwan97,072 websites
Russia21,231 websites
Germany16,251 websites
Korea, South10,475 websites
Japan9,455 websites
China7,723 websites
Hungary6,739 websites
France6,049 websites

Website Distribution by TLD

Number of websites using CVE-2009-4418
.com118,058 websites
.ru18,176 websites
.de13,217 websites
.info8,534 websites
.net7,327 websites
.org3,976 websites
.jp2,837 websites
.nl2,463 websites
.dk2,454 websites
.cz2,278 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2009-4418

Top websites that are affected by CVE-2009-4418. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
*****.***********.com Canada***
*****.***.tw Taiwan*,***
********************.ru Russia*,***
**********.*****.de Germany*,***
*******.***.ru Russia**,***
**************.ru Russia**,***
****.info France**,***
*******.com Japan**,***
******.com Taiwan**,***
*********.com United States**,***
See full domain list

FAQ

A total of 233,584 websites have been identified as vulnerable to CVE-2009-4418, based on global website indexing conducted by WebTechSurvey.
The PHP is affected by the CVE-2009-4418 vulnerability.
PHP versions up to and including 5.3 are vulnerable to CVE-2009-4418.