cve.bz

CVE-2021-44686

7.5 highEPSS 5.2%

High (7.5). EPSS 5.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
5.2% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-31)
CWE
CWE-400
Published
Modified
Record from
the NVD, synced

Affected

References

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