Zikula before 1.3.1 uses the rand and srand PHP functions for random number generation, which makes it easier for remote attackers to defeat protection mechanisms based on randomization by predicting a return value, as demonstrated by the authid protection mechanism.
Exploitability
AV:NAC:LAu:NImpact
C:NI:PA:N5/AV:N/AC:L/Au:N/C:N/I:P/A:N