What’s Vulnerable › Vulnerabilities

CVE-2020-15011

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-06-24 · updated 2026-06-17
• Weakness: CWE-74

Description

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

Affected products

• Canonical Ubuntu Linux: 16.04, 18.04
• Debian Linux: 8.0, 9.0, 10.0
• GNU Mailman: before 2.1.33 — fixed in 2.1.33

How to fix

Upgrade to a fixed version: GNU Mailman 2.1.33. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00047.html
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00063.html
• https://bugs.launchpad.net/mailman/+bug/1877379
• https://lists.debian.org/debian-lts-announce/2020/06/msg00036.html
• https://lists.debian.org/debian-lts-announce/2020/07/msg00007.html
• https://usn.ubuntu.com/4406-1/
• https://www.debian.org/security/2021/dsa-4991
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00047.html
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00063.html
• https://bugs.launchpad.net/mailman/+bug/1877379
• https://lists.debian.org/debian-lts-announce/2020/06/msg00036.html
• https://lists.debian.org/debian-lts-announce/2020/07/msg00007.html

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