{"schema_version":"1.7.3","id":"GHSA-vx57-7f4q-fpc7","published":"2022-02-15T01:57:18Z","modified":"2026-07-08T06:28:38.170237101Z","withdrawn":"2026-02-04T05:48:50.781084Z","aliases":["BIT-prometheus-2021-29622","CVE-2021-29622"],"summary":"Arbitrary redirects under /new endpoint","details":"### Impact\n\nIn 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 /.\nDue 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.\n\nIf a user visits a prometheus server with a specially crafted address (e.g.: `http://127.0.0.1:9090/new/new<url>`), they can be redirected to an arbitrary URL.\n\ne.g. if a user visits http://127.0.0.1:9090/new/newhttp://www.google.com/, they will be redirected to http://google.com.\n\n### Patches\n\nThe issue will be patched in 2.26.1 and 2.27.1 releases.\nIn 2.28.0, the /new endpoint will be removed completely.\n\n### Workarounds\n\nThe workaround is to disable access to /new via a reverse proxy in front of Prometheus.\n\nNote: Users who use a `--web.external-url=` flag _with a path_ (e.g.  `--web.external-url=http://example.com/prometheus`) are not affected.\n\n### For more information\n\nIf you have any questions or comments about this advisory, please use our community channels (https://prometheus.io/community).\nOur security policy is available at https://prometheus.io/docs/operating/security/\n","affected":[{"package":{"name":"github.com/prometheus/prometheus","ecosystem":"Go","purl":"pkg:golang/github.com/prometheus/prometheus"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.23.0"},{"fixed":"2.26.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/02/GHSA-vx57-7f4q-fpc7/GHSA-vx57-7f4q-fpc7.json"}},{"package":{"name":"github.com/prometheus/prometheus","ecosystem":"Go","purl":"pkg:golang/github.com/prometheus/prometheus"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.27.0"},{"fixed":"2.27.1"}]}],"versions":["2.27.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/02/GHSA-vx57-7f4q-fpc7/GHSA-vx57-7f4q-fpc7.json"}}],"references":[{"type":"WEB","url":"https://github.com/prometheus/prometheus/security/advisories/GHSA-vx57-7f4q-fpc7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-29622"},{"type":"WEB","url":"https://github.com/prometheus/prometheus/releases/tag/v2.26.1"},{"type":"WEB","url":"https://github.com/prometheus/prometheus/releases/tag/v2.27.1"}],"database_specific":{"cwe_ids":["CWE-601"],"github_reviewed":true,"github_reviewed_at":"2021-05-19T17:58:51Z","nvd_published_at":"2021-05-19T20:15:00Z","severity":"MODERATE"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}