Format string vulnerability in the log_message_cb function in otr-plugin.c in the Off-the-Record Messaging (OTR) pidgin-otr plugin before 3.2.1 for Pidgin might allow remote attackers to execute arbitrary code via format string specifiers in data that generates a log message.
Use of Externally-Controlled Format String The product uses a function that accepts a format string as an argument, but the format string originates from an external source.