{"id":"CVE-2026-54588","state":"PUBLISHED","title":"Poweradmin has Host Header Injection in OIDC redirect_uri, SAML ACS/SLO URL, and Logout Redirect Construction.","description":"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.","publishedAt":"2026-06-23T22:09:27.268Z","updatedAt":"2026-06-24T12:20:59.442Z","severity":{"score":9.6,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["poweradmin poweradmin"],"affected":[{"vendor":"poweradmin","product":"poweradmin","versions":[{"version":"< 4.2.4","status":"affected"},{"version":">= 4.3.0, < 4.3.3","status":"affected"}]}],"references":["https://github.com/poweradmin/poweradmin/security/advisories/GHSA-3735-5339-xfwx","https://github.com/poweradmin/poweradmin/releases/tag/v4.2.4","https://github.com/poweradmin/poweradmin/releases/tag/v4.3.3"],"weaknesses":["CWE-20","CWE-601"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/54xxx/CVE-2026-54588.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54588","state":"PUBLISHED","datePublished":"2026-06-23T22:09:27.268Z","dateUpdated":"2026-06-24T12:20:59.442Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-15T19:15:27.345Z"},"containers":{"cna":{"title":"Poweradmin has Host Header Injection in OIDC redirect_uri, SAML ACS/SLO URL, and Logout Redirect Construction.","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"poweradmin","product":"poweradmin","versions":[{"version":"< 4.2.4","status":"affected"},{"version":">= 4.3.0, < 4.3.3","status":"affected"}]}],"references":[{"url":"https://github.com/poweradmin/poweradmin/security/advisories/GHSA-3735-5339-xfwx","name":"https://github.com/poweradmin/poweradmin/security/advisories/GHSA-3735-5339-xfwx","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/poweradmin/poweradmin/releases/tag/v4.2.4","name":"https://github.com/poweradmin/poweradmin/releases/tag/v4.2.4","tags":["x_refsource_MISC"]},{"url":"https://github.com/poweradmin/poweradmin/releases/tag/v4.3.3","name":"https://github.com/poweradmin/poweradmin/releases/tag/v4.3.3","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":9.6,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","description":"CWE-20: Improper Input Validation","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-601","lang":"en","description":"CWE-601: URL Redirection to Untrusted Site ('Open Redirect')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-23T22:09:27.268Z"},"source":{"advisory":"GHSA-3735-5339-xfwx","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/poweradmin/poweradmin/security/advisories/GHSA-3735-5339-xfwx","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-24T12:20:38.664321Z","id":"CVE-2026-54588","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-24T12:20:59.442Z"}}]}}}