CVE-2021-44686

calibre before 5.32.0 contains a regular expression that is vulnerable to ReDoS (Regular Expression Denial of Service) in html_preprocess_rules in ebooks/conversion/preprocess.py.

Date published : 2021-12-06

https://bugs.launchpad.net/calibre/+bug/1951979

https://github.com/dwisiswant0/advisory/issues/18