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CVE-2025-43921

Medium priority
Needs evaluation

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...

1 affected package

mailman

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mailman Not in release Not in release Needs evaluation Needs evaluation
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CVE-2025-43920

Medium priority
Needs evaluation

GNU Mailman 2.1.39, as bundled in cPanel (and WHM), in certain external archiver configurations, allows unauthenticated attackers to execute arbitrary OS commands via shell metacharacters in an email Subject line. NOTE: multiple...

1 affected package

mailman

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mailman Not in release Not in release Needs evaluation Needs evaluation
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CVE-2025-43919

Medium priority
Needs evaluation

GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to read arbitrary files via ../ directory traversal at /mailman/private/mailman (aka the private archive authentication endpoint) via the...

1 affected package

mailman

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mailman Not in release Not in release Needs evaluation Needs evaluation
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CVE-2021-34337

Medium priority
Vulnerable

An issue was discovered in Mailman Core before 3.3.5. An attacker with access to the REST API could use timing attacks to determine the value of the configured REST API password and then make arbitrary REST API calls. The REST API...

1 affected package

mailman3

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mailman3 Not affected Not in release Vulnerable Vulnerable
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CVE-2021-44227

Medium priority

Some fixes available 1 of 3

In GNU Mailman before 2.1.38, a list member or moderator can get a CSRF token and craft an admin request (using that token) to set a new admin password or make other changes.

1 affected package

mailman

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mailman Vulnerable Fixed
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CVE-2021-43332

Low priority
Fixed

In GNU Mailman before 2.1.36, the CSRF token for the Cgi/admindb.py admindb page contains an encrypted version of the list admin password. This could potentially be cracked by a moderator via an offline brute-force attack.

1 affected package

mailman

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mailman Not in release Not in release Fixed Fixed
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CVE-2021-43331

Medium priority
Fixed

In GNU Mailman before 2.1.36, a crafted URL to the Cgi/options.py user options page can execute arbitrary JavaScript for XSS.

1 affected package

mailman

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mailman Not in release Not in release Fixed Fixed
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CVE-2021-42097

High priority
Fixed

GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A csrf_token value is not specific to a single user account. An attacker can obtain a value within the context of an unprivileged user account, and then use that...

1 affected package

mailman

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mailman Fixed Fixed
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CVE-2021-42096

High priority
Fixed

GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A certain csrf_token value is derived from the admin password, and may be useful in conducting a brute-force attack against that password.

1 affected package

mailman

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mailman Fixed Fixed
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CVE-2020-15011

Medium priority

Some fixes available 3 of 4

GNU Mailman before 2.1.33 allows arbitrary content injection via the Cgi/private.py private archive login page.

1 affected package

mailman

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
mailman Not in release Fixed Fixed
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