The strip_tags function in PHP 4.x up to 4.3.7, and 5.x up to 5.0.0RC3, does not filter null (\0) characters within tag names when restricting input to allowed tags, which allows dangerous tags to be processed by web browsers such as Internet Explorer and Safari, which ignore null characters and facilitate the exploitation of cross-site scripting (XSS) vulnerabilities.
CVSS Details
- CVSS 3.1 Base Score: 7.1
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Apple Osx Php | — | Apply OS X security update 2005-001 | Dec 16, 2011 | Jul 27, 2004 |
| Freebsd | — | Upgrade php4-cliUpgrade mod_php4-twigUpgrade mod_php4Upgrade php4-nmsUpgrade php5Upgrade php4-cgiUpgrade mod_php5Upgrade php4-dtcUpgrade php4Upgrade php4-hordeUpgrade php5-cliUpgrade php5-cgi | Dec 10, 2025 | Sep 27, 2004 |
| Gentoo Linux | — | Upgrade dev-php/php.Upgrade dev-php/php-cgi.Upgrade dev-php/mod_php. | Oct 30, 2017 | Jul 27, 2004 |
| Php | — | Upgrade to PHP version 4.3.8Upgrade to PHP version 5.0.1 | Oct 1, 2012 | Jul 27, 2004 |
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