CVE-2021-44686
calibre - security update
7.5
HIGH
CVSS 3.1
EPSS 0.41%
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.
How to fix CVE-2021-44686
To remediate CVE-2021-44686, upgrade the affected package to a fixed version below.
- Debian/calibre—upgrade to 5.12.0+dfsg-1+deb11u3 or later
- —upgrade to 5.12.0+dfsg-1+deb11u3 or later
Is CVE-2021-44686 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 5.12.0+dfsg-1+deb11u3
- from 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 |