Poweradmin has Host Header Injection in OIDC redirect_uri, SAML ACS/SLO URL, and Logout Redirect Construction._CVE-2026-54588

{
    "lastseen": "",
    "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.",
    "published": "2026-06-23T22:09:27.268Z",
    "modified": "2026-06-23T22:09:27.268Z",
    "type": "cve",
    "title": "Poweradmin has Host Header Injection in OIDC redirect_uri, SAML ACS/SLO URL, and Logout Redirect Construction.",
    "source": "GitHub_M",
    "references": "https://github.com/poweradmin/poweradmin/security/advisories/GHSA-3735-5339-xfwx\nhttps://github.com/poweradmin/poweradmin/releases/tag/v4.2.4\nhttps://github.com/poweradmin/poweradmin/releases/tag/v4.3.3",
    "id": "CVE-2026-54588",
    "bulletinFamily": "",
    "cwe": [
        "CWE-20",
        "CWE-601"
    ],
    "cvelist": null,
    "sourceData": "poweradmin poweradmin < 4.2.4\npoweradmin poweradmin >= 4.3.0, < 4.3.3",
    "sourceHref": "",
    "cvss": {
        "score": 9.6,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
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            "privilegesRequired": "",
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            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "poweradmin",
    "version": "< 4.2.4",
    "vendor": "poweradmin",
    "ai_description": "Host Header Injection vulnerability in Poweradmin's OIDC, SAML, and logout authentication flows",
    "ai_severity": "Critical",
    "ai_vendor": "Poweradmin",
    "ai_product": "Poweradmin",
    "ai_version": "< 4.2.4, >= 4.3.0 and < 4.3.3",
    "ai_score": 9.6
}