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Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2025-43921

GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to create lists via the /mailman/create endpoint. NOTE: multiple third parties report that they are unable to reproduce this, regardless of whether cPanel or WHM is used.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 12.4%
CVSS Severity
CVSS v3 Score 5.3
Products affected by CVE-2025-43921
  • Gnu » Mailman » Version: 2.1.1
    cpe:2.3:a:gnu:mailman:2.1.1
  • Gnu » Mailman » Version: 2.1.10
    cpe:2.3:a:gnu:mailman:2.1.10
  • Gnu » Mailman » Version: 2.1.10b1
    cpe:2.3:a:gnu:mailman:2.1.10b1
  • Gnu » Mailman » Version: 2.1.10b3
    cpe:2.3:a:gnu:mailman:2.1.10b3
  • Gnu » Mailman » Version: 2.1.10b4
    cpe:2.3:a:gnu:mailman:2.1.10b4
  • Gnu » Mailman » Version: 2.1.11
    cpe:2.3:a:gnu:mailman:2.1.11
  • Gnu » Mailman » Version: 2.1.12
    cpe:2.3:a:gnu:mailman:2.1.12
  • Gnu » Mailman » Version: 2.1.13
    cpe:2.3:a:gnu:mailman:2.1.13
  • Gnu » Mailman » Version: 2.1.14
    cpe:2.3:a:gnu:mailman:2.1.14
  • Gnu » Mailman » Version: 2.1.14-1
    cpe:2.3:a:gnu:mailman:2.1.14-1
  • Gnu » Mailman » Version: 2.1.15
    cpe:2.3:a:gnu:mailman:2.1.15
  • Gnu » Mailman » Version: 2.1.16
    cpe:2.3:a:gnu:mailman:2.1.16
  • Gnu » Mailman » Version: 2.1.17
    cpe:2.3:a:gnu:mailman:2.1.17
  • Gnu » Mailman » Version: 2.1.18
    cpe:2.3:a:gnu:mailman:2.1.18
  • Gnu » Mailman » Version: 2.1.18-1
    cpe:2.3:a:gnu:mailman:2.1.18-1
  • Gnu » Mailman » Version: 2.1.19
    cpe:2.3:a:gnu:mailman:2.1.19
  • Gnu » Mailman » Version: 2.1.2
    cpe:2.3:a:gnu:mailman:2.1.2
  • Gnu » Mailman » Version: 2.1.20
    cpe:2.3:a:gnu:mailman:2.1.20
  • Gnu » Mailman » Version: 2.1.21
    cpe:2.3:a:gnu:mailman:2.1.21
  • Gnu » Mailman » Version: 2.1.22
    cpe:2.3:a:gnu:mailman:2.1.22
  • Gnu » Mailman » Version: 2.1.23
    cpe:2.3:a:gnu:mailman:2.1.23
  • Gnu » Mailman » Version: 2.1.24
    cpe:2.3:a:gnu:mailman:2.1.24
  • Gnu » Mailman » Version: 2.1.25
    cpe:2.3:a:gnu:mailman:2.1.25
  • Gnu » Mailman » Version: 2.1.26
    cpe:2.3:a:gnu:mailman:2.1.26
  • Gnu » Mailman » Version: 2.1.27
    cpe:2.3:a:gnu:mailman:2.1.27
  • Gnu » Mailman » Version: 2.1.28
    cpe:2.3:a:gnu:mailman:2.1.28
  • Gnu » Mailman » Version: 2.1.29
    cpe:2.3:a:gnu:mailman:2.1.29
  • Gnu » Mailman » Version: 2.1.3
    cpe:2.3:a:gnu:mailman:2.1.3
  • Gnu » Mailman » Version: 2.1.30
    cpe:2.3:a:gnu:mailman:2.1.30
  • Gnu » Mailman » Version: 2.1.31
    cpe:2.3:a:gnu:mailman:2.1.31
  • Gnu » Mailman » Version: 2.1.33
    cpe:2.3:a:gnu:mailman:2.1.33
  • Gnu » Mailman » Version: 2.1.34
    cpe:2.3:a:gnu:mailman:2.1.34
  • Gnu » Mailman » Version: 2.1.35
    cpe:2.3:a:gnu:mailman:2.1.35
  • Gnu » Mailman » Version: 2.1.36
    cpe:2.3:a:gnu:mailman:2.1.36
  • Gnu » Mailman » Version: 2.1.37
    cpe:2.3:a:gnu:mailman:2.1.37
  • Gnu » Mailman » Version: 2.1.4
    cpe:2.3:a:gnu:mailman:2.1.4
  • Gnu » Mailman » Version: 2.1.5
    cpe:2.3:a:gnu:mailman:2.1.5
  • Gnu » Mailman » Version: 2.1.5.8
    cpe:2.3:a:gnu:mailman:2.1.5.8
  • Gnu » Mailman » Version: 2.1.6
    cpe:2.3:a:gnu:mailman:2.1.6
  • Gnu » Mailman » Version: 2.1.7
    cpe:2.3:a:gnu:mailman:2.1.7
  • Gnu » Mailman » Version: 2.1.8
    cpe:2.3:a:gnu:mailman:2.1.8
  • Gnu » Mailman » Version: 2.1.9
    cpe:2.3:a:gnu:mailman:2.1.9


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