{"id":"GHSA-xqvg-xm9m-p2c4","summary":"Moderate severity vulnerability that affects mailman","details":"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.","aliases":["CVE-2018-13796","PYSEC-2026-661"],"modified":"2026-07-06T08:11:10.333777576Z","published":"2018-09-11T18:57:16Z","database_specific":{"nvd_published_at":null,"cwe_ids":["CWE-20"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2020-06-16T22:04:19Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-13796"},{"type":"WEB","url":"https://bugs.launchpad.net/mailman/+bug/1780874"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-xqvg-xm9m-p2c4"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2018/07/msg00034.html"},{"type":"WEB","url":"https://security.gentoo.org/glsa/201904-10"},{"type":"WEB","url":"https://usn.ubuntu.com/4348-1"},{"type":"WEB","url":"https://www.mail-archive.com/mailman-users@python.org/msg71003.html"}],"affected":[{"package":{"name":"mailman","ecosystem":"PyPI","purl":"pkg:pypi/mailman"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.28"}]}],"versions":["3.0.0b3-"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2018/09/GHSA-xqvg-xm9m-p2c4/GHSA-xqvg-xm9m-p2c4.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"}]}