{"id":"CVE-2021-4180","aliases":["PYSEC-2026-753"],"url":"https://o3.security/vulnerability/CVE-2021-4180","summary":"Exposure of Sensitive Information to an Unauthorized Actor in OpenStack tripleo-heat-templates","details":"An information exposure flaw in openstack-tripleo-heat-templates allows an external user to discover the internal IP or hostname. An attacker could exploit this by checking the `www_authenticate_uri parameter` (which is visible to all end users) in configuration files. This would give sensitive information which may aid in additional system exploitation. A patch is available on the `master` branch and anticipated to be part of version 11.6.1.","published":"2022-03-24T00:00:17Z","modified":"2026-07-06T08:11:33.007972812Z","cvss":{"score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"tripleo-heat-templates","fixedVersion":"11.6.1"}],"fix":{"url":"https://github.com/openstack/tripleo-heat-templates/commit/160936df134a471cfd245bd60964046027a571ea","label":"openstack/tripleo-heat-templates@160936d"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4180"},{"type":"WEB","url":"https://github.com/openstack/tripleo-heat-templates/commit/160936df134a471cfd245bd60964046027a571ea"},{"type":"WEB","url":"https://github.com/openstack/tripleo-heat-templates/commit/2b9461e97fc5c4ceb0848d1cc4484f656bb85515"},{"type":"WEB","url":"https://bugs.launchpad.net/tripleo/+bug/1955397"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2035793"},{"type":"PACKAGE","url":"https://github.com/openstack/tripleo-heat-templates"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-06T08:11:33.007972812Z"}}