The c-client library 2000, 2001, or 2004 for PHP before 4.4.4 and 5.x before 5.1.5 do not check the (1) safe_mode or (2) open_basedir functions, and when used in applications that accept user-controlled input for the mailbox argument to the imap_open function, allow remote attackers to obtain access to an IMAP stream data structure and conduct unauthorized IMAP actions.
Severity
High 9.3
Published
7 Mar 2006
Last changed
16 Jun 2026
Added to UpHeron
14 Oct 2026
Exploit chance
3.1% in the next 30 daysHigher than 87% of CVEs. EPSS by FIRST, 12 Nov 2026