CVE-2026-33257

Insufficient input validation of internal webserver

Published Apr 22, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6233-1 pdns security update
Debian DSA Debian DSA DSA-6234-1 pdns-recursor security update
Debian DSA Debian DSA DSA-6235-1 dnsdist security update
History
Type Values Removed Values Added
CPEs cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:5.4.0:*:*:*:*:*:*:*
Type Values Removed Values Added
Weaknesses CWE-770
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Powerdns
Powerdns authoritative
Powerdns dnsdist
Powerdns recursor
Vendors & Products Powerdns
Powerdns authoritative
Powerdns dnsdist
Powerdns recursor
Type Values Removed Values Added
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.
Title Insufficient input validation of internal webserver
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
OX
Published
Updated
Apr 22, 2026, 6:10 PM
Reserved
Mar 18, 2026, 10:06 AM
Status
Analyzed
Published
Apr 22, 2026, 10:16 AM
Modified
Oct 26, 2026, 10:10 PM