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.
Analysis and contextual insights are available on OpenCVE Cloud.
Remediation
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-3862-1 | calibre security update |
EUVD |
EUVD-2021-31502 | 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. |
References
History
Tue, 04 Nov 2025 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2025-11-04T16:09:27.961Z
Reserved: 2021-12-06T00:00:00.000Z
Link: CVE-2021-44686
No data.
Status : Modified
Published: 2021-12-07T00:15:08.087
Modified: 2025-11-04T16:15:45.927
Link: CVE-2021-44686
No data.
OpenCVE Enrichment
No data.
Weaknesses
Debian DLA
EUVD