Content injection in GNU Mailman

Published: 2020-06-30
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-15011
Exploitation vector Network
Public exploit N/A
Vulnerable software
Operating systems & Components / Operating system

Vendor GNU

Security Advisory

This security advisory describes one low risk vulnerability.

1) Code Injection

Risk: Low

CVSSv3: 4.7 [CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-15011

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No


The vulnerability allows a remote attacker to inject arbitrary content.

The vulnerability exists due to improper input validation within the Cgi/ private archive login page.  A remote attacker can send a specially crafted request and inject arbitrary content.

Successful exploitation of the vulnerability requires that the roster visibility (private_roster) setting is 'Anyone'.


Install updates from vendor's website.

Vulnerable software versions

Gnu: 2.1.0, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.1.5, 2.1.6, 2.1.7, 2.1.8, 2.1.9, 2.1.10, 2.1.10b1, 2.1.10b3, 2.1.10b4, 2.1.10rc1, 2.1.11, 2.1.11rc1, 2.1.11rc2, 2.1.12, 2.1.12rc1, 2.1.12rc2, 2.1.13, 2.1.13rc1, 2.1.14, 2.1.14rc1, 2.1.15, 2.1.15rc1, 2.1.16, 2.1.16rc1, 2.1.16rc2, 2.1.16rc3, 2.1.17, 2.1.18, 2.1.18rc1, 2.1.18rc2, 2.1.18rc3, 2.1.19, 2.1.19rc1, 2.1.19rc2, 2.1.19rc3, 2.1.20, 2.1.21, 2.1.21rc2, 2.1.22, 2.1.23, 2.1.24, 2.1.25, 2.1.26, 2.1.27, 2.1.28, 2.1.29, 2.1.30, 2.1.30rc1, 2.1.31, 2.1.32

CPE External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.