{"id":"CVE-2026-54588","summary":"Poweradmin has Host Header Injection in OIDC redirect_uri, SAML ACS/SLO URL, and Logout Redirect Construction.","details":"Poweradmin is a web-based DNS administration tool for PowerDNS server. Versions prior to 4.2.4 and 4.3.3 use the attacker-controlled `HTTP_HOST` request header as the authoritative source for building callback URLs in its OIDC, SAML, and logout authentication flows without any validation. An unauthenticated attacker can poison the `redirect_uri` sent to the Identity Provider, causing the IdP to redirect the victim's authorization code to an attacker-controlled server - resulting in full account takeover with no credentials required. Versions 4.2.4 and 4.3.3 patch the issue.","aliases":["GHSA-3735-5339-xfwx"],"modified":"2026-07-15T01:49:16.402760575Z","published":"2026-06-23T22:09:27.268Z","database_specific":{"cwe_ids":["CWE-20","CWE-601"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54588.json","cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/poweradmin/poweradmin/releases/tag/v4.2.4"},{"type":"WEB","url":"https://github.com/poweradmin/poweradmin/releases/tag/v4.3.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54588.json"},{"type":"ADVISORY","url":"https://github.com/poweradmin/poweradmin/security/advisories/GHSA-3735-5339-xfwx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54588"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/poweradmin/poweradmin","events":[{"introduced":"0"},{"introduced":"5254d334d948d73dbb9202741f007c9be541a5f7"},{"fixed":"23a029e847e2d75b9758d5f001d1c1c14f64f7bb"},{"fixed":"7c78eab71ab1eba6330a721cb1ef33a95a06355f"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"4.2.4"},{"introduced":"4.3.0"},{"fixed":"4.3.3"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v4.3.2","v4.2.3","v4.3.1","v4.3.0","v4.2.2","v4.2.1","v4.2.0","v4.0.0","v3.9.2","v3.9.1","v3.9.0","v3.8.1","v3.8.0","v3.7.0","v3.7.0-alpha.1","v3.6.1","v3.6.0","v3.5.1","v3.5.0","v3.4.2","v3.4.1","v3.4.0","v3.3.0","v3.2.0","v3.1.0","v3.0.0","v2.2.2","v2.2.1","v2.2.0","v2.1.9","v2.1.8","v2.1.6","v2.1.5","v2.1.4","v2.1.3","v2.1.2","v2.1.1","v2.1.0","v2.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54588.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L"}]}