{"id":"UBUNTU-CVE-2021-29622","details":"Prometheus is an open-source monitoring system and time series database. In 2.23.0, Prometheus changed its default UI to the New ui. To ensure a seamless transition, the URL's prefixed by /new redirect to /. Due to a bug in the code, it is possible for an attacker to craft an URL that can redirect to any other URL, in the /new endpoint. If a user visits a prometheus server with a specially crafted address, they can be redirected to an arbitrary URL. The issue was patched in the 2.26.1 and 2.27.1 releases. In 2.28.0, the /new endpoint will be removed completely. The workaround is to disable access to /new via a reverse proxy in front of Prometheus.","modified":"2025-10-24T04:50:16Z","published":"2021-05-19T20:15:00Z","upstream":["CVE-2021-29622"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-29622"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2021/05/19/1"},{"type":"REPORT","url":"https://github.com/prometheus/prometheus/security/advisories/GHSA-vx57-7f4q-fpc7"},{"type":"REPORT","url":"https://github.com/prometheus/prometheus/releases/tag/v2.26.1"},{"type":"REPORT","url":"https://github.com/prometheus/prometheus/releases/tag/v2.27.1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-29622"}],"affected":[{"package":{"name":"prometheus","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/prometheus@0.16.2+ds-1ubuntu1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.14.0+ds-1","0.16.2+ds-1","0.16.2+ds-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"prometheus","binary_version":"0.16.2+ds-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-29622.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}