What is CVE-2023-2227?

CVE-2023-2227 is a critical-severity vulnerability in Modoboa, classified under Improper Authorization. CVSS score: 9.1/10. Published 2023-04-21.

How severe is CVE-2023-2227?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2023-2227 known to be exploited?

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

Auth bypass in Modoboa

CVE-2023-2227

Improper Authorization in GitHub repository modoboa/modoboa prior to 2.1.0.

Published 2023-04-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.440 (98.7th percentile), scored 2026-09-28.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.440 · newest: 0.440 · change: 0.000

Affected products

Modoboa
Modoboa Modoboa/modoboa — versions unspecified

Weakness classification (CWE)

CWE-285 — Improper Authorization

Public proof-of-concept exploits

7h3h4ckv157/7h3h4ckv157

References

huntr.dev/bounties/351f9055-2008-4af0-b820-01ff66678bf3 (Exploit, Patch, Third Party Advisory)
github.com/modoboa/modoboa/commit/7bcd3f6eb264d4e3e01071c97c2bac51cdd6fe97 (Patch)

Frequently asked questions

What is CVE-2023-2227?: CVE-2023-2227 is a critical-severity vulnerability in Modoboa, classified under Improper Authorization. CVSS score: 9.1/10. Published 2023-04-21.
How severe is CVE-2023-2227?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2023-2227 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.