{"id":"CVE-2025-27221","aliases":["GHSA-22h5-pq3x-2gf2"],"url":"https://o3.security/vulnerability/CVE-2025-27221","summary":"URI allows for userinfo Leakage in URI#join, URI#merge, and URI#+","details":"In the URI gem before 1.0.3 for Ruby, the URI handling methods (URI.join, URI#merge, URI#+) have an inadvertent leakage of authentication credentials because userinfo is retained even after changing the host.","published":"2025-03-03T00:00:00Z","modified":"2026-07-15T01:49:09.850561697Z","cvss":{"score":3.2,"severity":"LOW","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"RubyGems","name":"uri","fixedVersion":"0.11.3"},{"ecosystem":"RubyGems","name":"uri","fixedVersion":"0.12.4"},{"ecosystem":"RubyGems","name":"uri","fixedVersion":"0.13.2"},{"ecosystem":"RubyGems","name":"uri","fixedVersion":"1.0.3"}],"fix":null,"references":[{"type":"WEB","url":"https://hackerone.com/reports/2957667"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00008.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00015.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27221.json"},{"type":"ADVISORY","url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/uri/CVE-2025-27221.yml"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-27221"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:09.850561697Z"}}