Authorization bypass in PowerDNS-Admin lets users refresh other zones
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.
Summary
PowerDNS-Admin through 2026.08.1 contains an authorization bypass tied to user-controlled keys (CWE-639). An authenticated user with the User role can refresh secondary zones they cannot access by supplying a different domain field in the JSON body. An attacker authorized for any one zone can force AXFR transfers of other users' secondary zones and infer whether zones exist from differing responses.
Written with Claude Haiku 5.5 from the sources below · 2026-10-30
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| PowerDNS-Admin | PowerDNS-Admin | up to 2026.08.1 | — | No fix listed | CNA |
- PowerDNS-Admin VendorPowerDNS-Admin Affected up to 2026.08.1 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for PowerDNS-Admin.
Written with Claude Haiku 5.5 from the sources below · 2026-10-30
Timeline
- 2026-10-30 Threatist record created from CVE-2026-119658
- 2026-10-30 Alias added: GHSA-7x9g-4g72-fhmf
- 2026-10-30 CISA SSVC decision points changed
- 2026-10-30 Priority changed: LOW → MEDIUM
References
Advisory 1
Other 4
- https://github.com/PowerDNS-Admin/PowerDNS-Admin/issues/1940
- https://github.com/PowerDNS-Admin/PowerDNS-Admin/blob/v2026.08.1/powerdnsadmin/routes/domain.py#L738-L766
- https://github.com/PowerDNS-Admin/PowerDNS-Admin/blob/v2026.08.1/powerdnsadmin/models/domain.py#L702-L730
- https://github.com/PowerDNS-Admin/PowerDNS-Admin
Sources
- CVE-2026-119658 · CVE Program
- CVE-2026-119658 · NVD
- FIRST EPSS
- GHSA-7x9g-4g72-fhmf · GitHub Advisory Database · CC BY 4.0
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