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CVE-2026-54588

CRITICAL
9.6
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-54588
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-15 19:15 UTC
Published
2026-06-23 22:09 UTC
Last updated
2026-06-23 22:09 UTC
Primary CWE
CWE-20
CWE-20: Improper Input Validation
Vendor / Product
poweradmin / poweradmin
Sources
cve.org  ·  NVD

Severity & Metrics

9.6 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L
Affected products (1)
VendorProductPlatformVersions
poweradmin poweradmin — < 4.2.4, >= 4.3.0, < 4.3.3
Weakness (CWE)
CWESourceDescription
CWE-20 cna CWE-20: Improper Input Validation
CWE-601 cna CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
CVSS scores (1)
ScoreSeverityVersionSourceVector
9.6 CRITICAL 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L
References (3)
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