Lucene search

MitreCVE-2021-44686

HistoryDec 07, 2021 - 12:15 a.m.

CVE-2021-44686

2021-12-0700:15:08

CWE-400

mitre

web.nvd.nist.gov

calibre

cve-2021-44686

vulnerability

redos

html_preprocess_rules

ebooks

conversion

preprocess.py

nvd

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.002

Percentile

62.2%

JSON

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 configurations

Nvd

Node

calibre-ebookcalibreRange<5.32.0

Node

fedoraprojectfedoraMatch34

VendorProductVersionCPE
calibre-ebookcalibre*cpe:2.3:a:calibre-ebook:calibre:*:*:*:*:*:*:*:*
fedoraprojectfedora34cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*