CVE-2011-4718

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-08-13 · updated 2026-06-16
Weakness: CWE-264

Description

Session fixation vulnerability in the Sessions subsystem in PHP before 5.5.2 allows remote attackers to hijack web sessions by specifying a session ID.

Affected products

PHP: through 5.5.1; 5.0.0, 5.0.0-beta1, 5.0.0-beta2, 5.0.0-beta3, 5.0.0-beta4, 5.0.0-rc1 (+93)

References

http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=169b78eb79b0e080b67f9798708eb3771c6d0b2f
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=25e8fcc88fa20dc9d4c47184471003f436927cde
https://bugs.php.net/bug.php?id=60491
https://wiki.php.net/rfc/strict_sessions
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=169b78eb79b0e080b67f9798708eb3771c6d0b2f
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=25e8fcc88fa20dc9d4c47184471003f436927cde
https://bugs.php.net/bug.php?id=60491
https://wiki.php.net/rfc/strict_sessions

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