What is CVE-2022-0406?

CVE-2022-0406 is a medium-severity vulnerability in Janeczku Calibre-Web, classified under Improper Authorization. CVSS score: 4.3/10. Published 2022-04-03.

How severe is CVE-2022-0406?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2022-0406 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Janeczku Calibre-Web

CVE-2022-0406

Improper Authorization in GitHub repository janeczku/calibre-web prior to 0.6.16.

Published 2022-04-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (49.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Janeczku Calibre-Web
Janeczku Janeczku/calibre-Web — versions unspecified

Weakness classification (CWE)

Public proof-of-concept exploits

References

huntr.dev/bounties/d7498799-4797-4751-b5e2-b669e729d5db (Exploit, Patch, Third Party Advisory, Issue Tracking)
github.com/janeczku/calibre-web/commit/e0e04220109920575179a8f924543449c6de0706 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-0406?: CVE-2022-0406 is a medium-severity vulnerability in Janeczku Calibre-Web, classified under Improper Authorization. CVSS score: 4.3/10. Published 2022-04-03.
How severe is CVE-2022-0406?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2022-0406 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.