What is CVE-2023-2106?

CVE-2023-2106 is a critical-severity vulnerability in Janeczku Calibre-Web, classified under Weak Password Requirements. CVSS score: 9.8/10. Published 2023-04-15.

How severe is CVE-2023-2106?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Janeczku Calibre-Web

CVE-2023-2106

Weak Password Requirements in GitHub repository janeczku/calibre-web prior to 0.6.20.

Published 2023-04-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (53.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.0% 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)

CWE-521 — Weak Password Requirements

References

github.com/janeczku/calibre-web/commit/49e4f540c9b204c7e39b3c27ceadecd83ed60e7e (Patch)
huntr.dev/bounties/c3d5c647-7557-40a9-aee4-24dc14882781 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-2106?: CVE-2023-2106 is a critical-severity vulnerability in Janeczku Calibre-Web, classified under Weak Password Requirements. CVSS score: 9.8/10. Published 2023-04-15.
How severe is CVE-2023-2106?: Critical severity. CVSS v3 base score is 9.8 out of 10.