CVE-2021-44686

Description

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.

Affected Platforms

Weakness Type

CWE-400

References

• https://bugs.launchpad.net/calibre/+bug/1951979
• https://github.com/dwisiswant0/advisory/issues/18
• https://github.com/kovidgoyal/calibre/compare/v5.31.1...v5.32.0
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• https://bugs.launchpad.net/calibre/+bug/1951979
• https://github.com/dwisiswant0/advisory/issues/18