CVE-2026-33635

iCalendar is a Ruby library for dealing with iCalendar files in the iCalendar format defined by RFC-5545. Starting in version 2.0.0 and prior to version 2.12.2, .ics serialization does not properly sanitize URI property values, enabling ICS injection through attacker-controlled input, adding...

UBUNTU-CVE-2026-33635

iCalendar is a Ruby library for dealing with iCalendar files in the iCalendar format defined by RFC-5545. Starting in version 2.0.0 and prior to version 2.12.2, .ics serialization does not properly sanitize URI property values, enabling ICS injection through attacker-controlled input, adding...

CVE-2026-33635 iCalendar has ICS injection via unsanitized URI property values

iCalendar is a Ruby library for dealing with iCalendar files in the iCalendar format defined by RFC-5545. Starting in version 2.0.0 and prior to version 2.12.2, .ics serialization does not properly sanitize URI property values, enabling ICS injection through attacker-controlled input, adding...

libical: Stack buffer overflow in icalrecur_add_bydayrules in icalrecur.c

A flaw in Thunderbird's implementation of iCal causes a stack buffer overflow in icalrecuraddbydayrules when processing certain email messages, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird 60.7.1...