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CVE-2021-4171

Business Logic Errors in janeczku/calibre-web

7.7 HighFix available

CVE-2021-4171 is a high vulnerability (CVSS 7.7) in Janeczku Calibre-web, published January 17, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.43%, the 73rd percentile. Fixed in calibreweb 0.6.15.

What does this mean?
Severity
7.7 HighCVSS 3.0, CVE List
Exploit chance
1.43%EPSS, 73rd percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
0.6.15calibreweb +1 more

Description

calibre-web is vulnerable to Business Logic Errors

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
High
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
High

Exploit likelihood

1.43%Up 0.8 points since Jan 18, 2022
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
calibreweb
PyPI
before 0.6.15
0.6.15
calibreweb
PyPI
before 0.6.15, plus listed versions
0.6.120.6.130.6.14
0.6.15

What each source reports

CVE List Score used7.7

Business Logic Errors in janeczku/calibre-web

calibre-web is vulnerable to Business Logic Errors

Record
CVE-2021-4171
CVSS 3.0
7.7 HighCVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:H
Weakness
CWE-840
Updated
2026-11-02
EUVDEUVD-2022-07457.7

calibre-web is vulnerable to Business Logic Errors

Record
EUVD-2022-0745
CVSS 3.0
7.7 HighCVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-xp7p-3gx7-j6wx9.8

calibre-web is vulnerable to Business Logic Errors

calibre-web is vulnerable to Business Logic Errors

Record
GHSA-xp7p-3gx7-j6wx
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
NVD9.8

calibre-web is vulnerable to Business Logic Errors

Record
CVE-2021-4171
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.0
7.7 HighCVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-840
Updated
2026-11-02
OSV9.8

calibre-web is vulnerable to Business Logic Errors

Record
CVE-2021-4171
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-xp7p-3gx7-j6wx9.8

calibre-web is vulnerable to Business Logic Errors

calibre-web is vulnerable to Business Logic Errors

Record
GHSA-xp7p-3gx7-j6wx
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVPYSEC-2026-3079.8

calibre-web is vulnerable to Business Logic Errors

calibre-web is vulnerable to Business Logic Errors

Record
PYSEC-2026-307
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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