High

The modoboa-dmarc plugin 1.1.0 for Modoboa is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this to perform a denial of service

  • Disclosed: 10.12.2019
  • Updated: 11.10.2026 12:20

The modoboa-dmarc plugin 1.1.0 for Modoboa is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this to perform a denial of service against the DMARC reporting functionality, such as by referencing the /dev/random file within XML documents that are emailed to the address in the rua field of the DMARC records of a domain.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) modoboa-dmarc < 1.2.0 1.2.0

References

CVSS score 7.5/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
CWE-91
Platform
Python (PyPI)
Package
modoboa-dmarc
Disclosed
10.12.2019
Updated
11.10.2026 12:20

Sources and licenses

OSV / GitHub Advisory Database - GHSA-vc42-mgr2-w34r - CC BY 4.0

OSV / GitHub Advisory Database - PYSEC-2019-105 - PyPA Advisory Database; CC BY 4.0

Vulnerability history: modoboa-dmarc

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

This is the only known vulnerability of this package.

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