Unrated severityNVD Advisory· Published Dec 6, 2021· Updated Nov 4, 2025
CVE-2021-44686
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- calibre/calibredescription
- Range: <5.32.0
Patches
Vulnerability mechanics
References
4- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W7QKFPYJ23KG6WJ5NIYAM4N2NWZCLQGL/mitrevendor-advisoryx_refsource_FEDORA
- bugs.launchpad.net/calibre/+bug/1951979mitrex_refsource_MISC
- github.com/dwisiswant0/advisory/issues/18mitrex_refsource_MISC
- github.com/kovidgoyal/calibre/compare/v5.31.1...v5.32.0mitrex_refsource_MISC
News mentions
0No linked articles in our index yet.