CVE-2026-42005 PUBLISHED

Insufficient input validation of internal web server

Assigner: OX
Reserved: 23.04.2026 Published: 25.06.2026 Updated: 25.06.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS Score: 4.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	None
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	PowerDNS
Product	Authoritative
Versions	Default: unaffected affected from 4.9.0 to 4.9.16 (excl.) affected from 5.0.0 to 5.0.6 (excl.) affected from 5.1.0 to 5.1.2 (excl.)

Credits

ilya rozentsvaig finder

References

https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-07.html

Problem Types

Allocation of Resources Without Limits or Throttling CWE