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Modoboa CVE-2023-2160

CRITICAL
Weak Password Requirements (CWE-521)
2023-04-18 security@huntr.dev
9.8
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Password strength requirements
Impact

CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.
Patch available 0.6% exploitation probability (EPSS)

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AnalysisAI

Weak Password Requirements in GitHub repository modoboa/modoboa prior to 2.1.0. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected Packages

pypi modoboa fix: 2.1.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in pypi

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-521. Weak Password Requirements in GitHub repository modoboa/modoboa prior to 2.1.0. Affected products include: Modoboa. Version information: prior to 2.1.0..

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionNVD

Weak Password Requirements in GitHub repository modoboa/modoboa prior to 2.1.0.

Threat Intelligence Overview

EPSS Score
0.6%
Top 55% exploitable
Exploit
POC
Public exploit code exists
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC Yes
EPSS 0.6%
Patch available Yes
Active threat No
Deciding rule
CRITICAL severity + public POC available
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

70
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +49
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:a:modoboa:modoboa:*:*:*:*:*:*:*:*
CVE-2023-0777 CRITICAL POC
9.8 Feb 10

Authentication Bypass by Primary Weakness in GitHub repository modoboa/modoboa prior to 2.0.4. Rated critical severity (

CVE-2023-2227 CRITICAL POC
9.1 Apr 21

Improper Authorization in GitHub repository modoboa/modoboa prior to 2.1.0. Rated critical severity (CVSS 9.1), this vul

CVE-2023-5690 HIGH POC
8.8 Oct 20

Cross-Site Request Forgery (CSRF) in GitHub repository modoboa/modoboa prior to 2.2.2. Rated high severity (CVSS 8.8), t

CVE-2023-0860 HIGH POC
7.5 Feb 16

Improper Restriction of Excessive Authentication Attempts in GitHub repository modoboa/modoboa-installer prior to 2.0.4.

CVE-2019-19702 HIGH POC
7.5 Dec 10

The modoboa-dmarc plugin 1.1.0 for Modoboa is vulnerable to an XML External Entity Injection (XXE) attack when processin

CVE-2023-2228 MEDIUM POC
6.8 Apr 21

Cross-Site Request Forgery (CSRF) in GitHub repository modoboa/modoboa prior to 2.1.0. Rated medium severity (CVSS 6.8),

CVE-2023-0438 MEDIUM POC
6.5 Jan 23

Cross-Site Request Forgery (CSRF) in GitHub repository modoboa/modoboa prior to 2.0.4. Rated medium severity (CVSS 6.5),

CVE-2023-0398 MEDIUM POC
6.5 Jan 19

Cross-Site Request Forgery (CSRF) in GitHub repository modoboa/modoboa prior to 2.0.4. Rated medium severity (CVSS 6.5),

CVE-2023-5689 MEDIUM POC
5.4 Oct 20

Cross-site Scripting (XSS) - DOM in GitHub repository modoboa/modoboa prior to 2.2.2. Rated medium severity (CVSS 5.4),

CVE-2023-5688 MEDIUM POC
5.4 Oct 20

Cross-site Scripting (XSS) - DOM in GitHub repository modoboa/modoboa prior to 2.2.2. Rated medium severity (CVSS 5.4),

CVE-2023-0519 MEDIUM POC
5.4 Jan 26

Cross-site Scripting (XSS) - Stored in GitHub repository modoboa/modoboa prior to 2.0.4. Rated medium severity (CVSS 5.4

CVE-2023-0470 MEDIUM POC
5.4 Jan 26

Cross-site Scripting (XSS) - Stored in GitHub repository modoboa/modoboa prior to 2.0.4. Rated medium severity (CVSS 5.4

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