Vulnerability · Published Apr 22, 2026 · Assigned by OX
CVE-2026-33608Incomplete domain name sanitization during
High 7.4
In plain English
A high-severity code injection in Authoritative from PowerDNS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.4High
Exploit odds (30 days)0.4%top 67.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An attacker can send a notify request that causes a new secondary domain to be added to the bind backend, but causes said backend to update its configuration to an invalid one, leading to the backend no longer able to run on the next restart, requiring manual operation to fix it.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.23 | pdns | 5.0.4-r0 | ALPINE-CVE-2026-33608 |
| Alpine:v3.24 | pdns | 5.0.4-r0 | ALPINE-CVE-2026-33608 |
| Debian:12 | pdns | no fix listed | DEBIAN-CVE-2026-33608 |
| Debian:13 | pdns | 4.9.14-0+deb13u1 | DEBIAN-CVE-2026-33608 |
| Debian:14 | pdns | 5.0.4-1 | DEBIAN-CVE-2026-33608 |
| Ubuntu:24.04:LTS | pdns | no fix listed | UBUNTU-CVE-2026-33608 |
| Ubuntu:25.10 | pdns | no fix listed | UBUNTU-CVE-2026-33608 |
| Ubuntu:26.04:LTS | pdns | no fix listed | UBUNTU-CVE-2026-33608 |
| Ubuntu:26.10 | pdns | no fix listed | UBUNTU-CVE-2026-33608 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| PowerDNS | Authoritative | 5.0.0 – before 5.0.44.9.0 – before 4.9.14 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H