CVE-2021-44686
HIGH7.5EPSS 0.41%calibre - security update
Published: 12/7/2021Modified: 4/28/2026
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 packages (2)
- Debian/calibrefrom 0, < 5.12.0+dfsg-1+deb11u3
- Debian/calibrefrom 0, < 5.12.0+dfsg-1+deb11u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |