Vulnerability · Published Oct 30, 2026 · Assigned by VulnCheck

CVE-2026-119658PowerDNS-Admin through 2026.08.1 Authorization Bypass via /domain/<domain_name>/update

Medium 4.3

In plain English

A medium-severity authorization bypass via user-controlled key in PowerDNS-Admin from PowerDNS-Admin. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.4%top 64.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
PowerDNS-Admin	PowerDNS-Admin	0 – through 2026.08.1

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

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