CVE-2026-33611

Insufficient validation of HTTPS and SVCB records

State: Published
Severity: 6.5 Medium
Published: Apr 22, 2026
Updated: Apr 22, 2026
Reserved: Mar 23, 2026

Description

An operator allowed to use the REST API can cause the Authoritative server to produce invalid HTTPS or SVCB record data, which can in turn cause LMDB database corruption, if using the LMDB backend.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H	OX

Weaknesses

CWE-190 Integer Overflow or Wraparound

Affected Products

Product	Versions
AuthoritativePowerDNS	5.0.0 to before 5.0.4Affected 4.9.0 to before 4.9.14Affected

References

https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-05.html

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