DEBIAN-CVE-2021-44686

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Source
https://security-tracker.debian.org/tracker/CVE-2021-44686
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-44686.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2021-44686
Upstream
Published
2021-12-07T00:15:08.087Z
Modified
2025-11-20T10:15:12.245644Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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

References

Affected packages

Debian:11 / calibre

Package

Name
calibre
Purl
pkg:deb/debian/calibre?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.12.0+dfsg-1+deb11u3

Affected versions

5.*
5.12.0+dfsg-1
5.12.0+dfsg-1+deb11u1
5.12.0+dfsg-1+deb11u2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-44686.json"

Debian:12 / calibre

Package

Name
calibre
Purl
pkg:deb/debian/calibre?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.33.0+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-44686.json"

Debian:13 / calibre

Package

Name
calibre
Purl
pkg:deb/debian/calibre?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.33.0+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-44686.json"

Debian:14 / calibre

Package

Name
calibre
Purl
pkg:deb/debian/calibre?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.33.0+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-44686.json"