CVE-2023-2227

Improper Authorization in modoboa/modoboa

9.1 CriticalFix available

CVE-2023-2227 is a critical vulnerability (CVSS 9.1) in Modoboa, published April 21, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 44.0%, the 98th percentile. Fixed in modoboa 2.1.0.

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

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: None

Exploit likelihood

44.0%Up 44.0 points since Apr 22, 2023

What each source reports

CVE List Score used 9.1

Improper Authorization in modoboa/modoboa

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

Record: CVE-2023-2227
CVSS 3.0: 9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness: CWE-285
Updated: 2026-11-02

EUVDEUVD-2023-0171 9.1

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

Record: EUVD-2023-0171
CVSS 3.0: 9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-67mg-gm8m-ph5r 9.3

Improper Authorization in modoboa

In modoboa prior to 2.1.0, sending a GET request to the endpoint /api/v2/parameters/core/ returns sensitive information without any authentication or authorization.

Record: GHSA-67mg-gm8m-ph5r
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness: CWE-285
Updated: 2026-11-02

NVD 9.1

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

Record: CVE-2023-2227
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 3.0: 9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness: CWE-285
Updated: 2026-11-02

OSV 9.1

Improper Authorization in modoboa/modoboa

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

Record: CVE-2023-2227
CVSS 3.0: 9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness: CWE-285
Updated: 2026-11-02

OSVGHSA-67mg-gm8m-ph5r 9.3

Improper Authorization in modoboa

In modoboa prior to 2.1.0, sending a GET request to the endpoint /api/v2/parameters/core/ returns sensitive information without any authentication or authorization.

Record: GHSA-67mg-gm8m-ph5r
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness: CWE-285
Updated: 2026-11-02

OSVPYSEC-2023-35 No score

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

Record: PYSEC-2023-35
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`modoboa` PyPI	before 2.1.0	2.1.0
`modoboa` PyPI	before 2.1.0, plus listed versions 0.7.01.10.01.10.11.10.21.10.3 Show 45 moreShow less 1.10.41.10.51.10.61.10.71.11.01.11.11.12.01.12.11.12.21.13.01.13.11.14.01.15.01.16.01.16.11.17.01.2.01.2.0-rc21.2.11.2.21.3.01.3.11.3.21.3.31.3.41.3.51.4.11.4.21.4.31.4.41.4.51.5.01.5.11.5.21.5.31.6.01.6.11.6.21.6.31.7.01.7.11.7.21.7.31.7.41.8.0	2.1.0
`modoboa` PyPI	before 2.1.0, plus listed versions 0.7.01.10.01.10.11.10.21.10.3 Show 45 moreShow less 1.10.41.10.51.10.61.10.71.11.01.11.11.12.01.12.11.12.21.13.01.13.11.14.01.15.01.16.01.16.11.17.01.2.01.2.0-rc21.2.11.2.21.3.01.3.11.3.21.3.31.3.41.3.51.4.11.4.21.4.31.4.41.4.51.5.01.5.11.5.21.5.31.6.01.6.11.6.21.6.31.7.01.7.11.7.21.7.31.7.41.8.0	2.1.0

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Nuclei	Modoboa < 2.1.0 - Improper Authorization

History

History
When	Changed	Sources
2026-11-03	aliases	EUVD
2026-11-02	created	CVE List, GitHub Advisories, Nuclei, NVD, OSV

References

This page doesn't list everything

Left out here: 61 versions. The JSON record has them.