What’s Vulnerable › Vulnerabilities

CVE-2016-6288

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-07-25 · updated 2026-06-17
• Weakness: CWE-119

Description

The php_url_parse_ex function in ext/standard/url.c in PHP before 5.5.38 allows remote attackers to cause a denial of service (buffer over-read) or possibly have unspecified other impact via vectors involving the smart_str data type.

Affected products

• PHP: through 5.5.37

References

• http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=629e4da7cc8b174acdeab84969cbfc606a019b31
• http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
• http://openwall.com/lists/oss-security/2016/07/24/2
• http://php.net/ChangeLog-5.php
• http://rhn.redhat.com/errata/RHSA-2016-2750.html
• http://www.securityfocus.com/bid/92111
• http://www.securitytracker.com/id/1036430
• https://bugs.php.net/70480
• https://support.apple.com/HT207170
• http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=629e4da7cc8b174acdeab84969cbfc606a019b31
• http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
• http://openwall.com/lists/oss-security/2016/07/24/2

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