What’s Vulnerable › Vulnerabilities

CVE-2018-13796

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-07-12 · updated 2026-06-17
• Weakness: CWE-20

Description

An issue was discovered in GNU Mailman before 2.1.28. A crafted URL can cause arbitrary text to be displayed on a web page from a trusted site.

Affected products

• GNU Mailman: before 2.1.28 — fixed in 2.1.28

How to fix

Upgrade to a fixed version: GNU Mailman 2.1.28. Check the vendor advisory for mitigations.

References

• https://bugs.launchpad.net/mailman/+bug/1780874
• https://lists.debian.org/debian-lts-announce/2018/07/msg00034.html
• https://security.gentoo.org/glsa/201904-10
• https://usn.ubuntu.com/4348-1/
• https://www.mail-archive.com/mailman-users%40python.org/msg71003.html
• https://bugs.launchpad.net/mailman/+bug/1780874
• https://lists.debian.org/debian-lts-announce/2018/07/msg00034.html
• https://security.gentoo.org/glsa/201904-10
• https://usn.ubuntu.com/4348-1/
• https://www.mail-archive.com/mailman-users%40python.org/msg71003.html

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