What’s Vulnerable › Vulnerabilities
CVE-2026-42005: Insufficient input validation of internal web server
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.6% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-06-25 · updated 2026-10-25
- Weakness: CWE-400
Description
An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.
Affected products
- PowerDNS Authoritative: from 4.9.0 before 4.9.16; from 5.0.0 before 5.0.6; from 5.1.0 before 5.1.2 — fixed in 4.9.16, 5.0.6, 5.1.2
How to fix
Upgrade to a fixed version: PowerDNS Authoritative 4.9.16, 5.0.6, 5.1.2. Check the vendor advisory for mitigations.
References
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