This update for python3 fixes the following issues: Security issue fixed: - CVE-2019-10160: Fixed a regression in urlparse and urlsplit introduced by the fix for CVE-2019-9636 . - CVE-2018-20852: Fixed an information leak where cookies could be send to the wrong server because of incorrect domain validation . Non-security issue fixed: - Fixed an issue where the SIGINT signal was ignored or not handled .