Description
PowerDNS-Admin through 2026.08.1 contains an authorization bypass vulnerability that allows authenticated User-role accounts to refresh secondary zones they cannot access by supplying a different 'domain' field in the JSON body. Attackers authorized for any one zone can force axfr-retrieve transfers of other users' secondary zones and infer zone existence from differing responses.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| PowerDNS-Admin | PowerDNS-Admin | ≤ 2026.08.1 | — |
Advisories 1
- WID-SEC-2026-4277 PowerDNS: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen BSI CERT-Bund (WID) · Nov 1, 2026
References
- https://github.com/PowerDNS-Admin/PowerDNS-Admin/issues/1940 issue-tracking
- https://github.com/PowerDNS-Admin/PowerDNS-Admin/pull/1942 issue-tracking patch
- https://github.com/PowerDNS-Admin/PowerDNS-Admin/blob/v2026.08.1/powerdnsadmin/routes/domain.py#L738-L766 technical-description
- https://github.com/PowerDNS-Admin/PowerDNS-Admin/blob/v2026.08.1/powerdnsadmin/models/domain.py#L702-L730 technical-description
- https://hackmd.io/@hieuPenguinnn/powerdns-admin-record-update-body-domain-override-cross-zone-idor third-party-advisory
- https://github.com/PowerDNS-Admin/PowerDNS-Admin product
- VulnCheck Advisory: PowerDNS-Admin through 2026.08.1 Authorization Bypass via /domain/<domain_name>/update third-party-advisory