CVE-2021-4171

highpriority · track · 39EPSS 0.014 · 72 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.39% (72nd) EPSS

CVSS 7.5 · high

Is it mine?

3 products

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

calibre-web is vulnerable to Business Logic Errors

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.07.7highCVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:Hsecondary · ENISA EU

v3.07.7highCVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:Hsecondary · security@huntr.devexploitability 1.3 · impact 5.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

The CWE weakness classes this flaw belongs to.

Products and version ranges known to be affected.

Vendor and ecosystem advisories describing this.

GHSA-xp7p-3gx7-j6wxcalibre-web is vulnerable to Business Logic Errors2022-01-21ghsa · osvUS
calibre-web is vulnerable to Business Logic Errors
PYSEC-2026-307calibre-web is vulnerable to Business Logic Errors2026-06-29vendor · osvUS
calibre-web is vulnerable to Business Logic Errors

Other names and identifiers for this entity.

Which sources assert this record, and when.

published 2022-01-17modified 2026-06-17

External citations — patches, advisories, analysis.

scry

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