Issue Description

K2 identified an issue regarding insecure deserialization that affects all Endpoint SmartObject Service Types. For more information see KB003329 - Behavioral change in K2 Endpoint Service Types.

Resolution

The fix is available in the following K2 versions:

K2 4.7 March 2018 Cumulative Update K2 Five (5.0) September 2018 Cumulative Update K2 Five (5.1) November 2018 Cumulative Update K2 Five (5.2) May 2019 Cumulative Update K2 Five (5.3)
Fix Pack 51 Fix Pack 18 Fix Pack 22 Fix Pack 13 Fix Pack 18
  1. Ensure you have the correct K2 version and/or Cumulative Update installed. See KB001893 to see what Fix Pack level you have installed.
  2. Download the latest Fix Pack using the links in the table above for the version you require.
  3. Install the Fix Pack to apply the fix.