CVE-2026-33256

Published: Apr 22, 2026

Modified: Apr 22, 2026

PUBLISHED

CVSS v3.1

5.3

MEDIUM

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.

Vendor	Product	Versions
PowerDNS	Recursor	affected `5.4.0 - < 5.4.1` affected `5.3.0 - < 5.3.6` affected `5.2.0 - < 5.2.9`

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

References

https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html

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CVE-2026-33256

Description

Affected Products

CVSS v3.1 Details

References