VULNERABILITY INTELLIGENCE
CVE-2009-3558
CVSS score6.8 MEDIUM
EPSS probability2.08%
CISA KEVNot currently listed
Published2009-11-23
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:P/I:P/A:P
Description
The posix_mkfifo function in ext/posix/posix.c in PHP before 5.2.12 and 5.3.x before 5.3.1 allows context-dependent attackers to bypass open_basedir restrictions, and create FIFO files, via the pathname and mode arguments, as demonstrated by creating a .htaccess file.