What is CVE-2022-0939?

CVE-2022-0939 is a critical-severity vulnerability in Janeczku Calibre-Web, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.9/10. Published 2022-04-04.

How severe is CVE-2022-0939?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Is CVE-2022-0939 known to be exploited?

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

SSRF in Janeczku Calibre-Web

CVE-2022-0939

Server-Side Request Forgery (SSRF) in GitHub repository janeczku/calibre-web prior to 0.6.18.

Vulnerability class: SSRF (Server-Side Request Forgery)

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

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H.

EPSS exploit prediction

EPSS: 0.011 (63.1th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

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

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

Public proof-of-concept exploits

416e6e61/My-CVEs

References

huntr.dev/bounties/768fd7e2-a767-4d8d-a517-e9dda849c6e4 (Exploit, Patch, Third Party Advisory, Issue Tracking)
github.com/janeczku/calibre-web/commit/4545f4a20d9ff90b99bbd4e3e34b6de4441d6367 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-0939?: CVE-2022-0939 is a critical-severity vulnerability in Janeczku Calibre-Web, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.9/10. Published 2022-04-04.
How severe is CVE-2022-0939?: Critical severity. CVSS v3 base score is 9.9 out of 10.
Is CVE-2022-0939 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.