What is CVE-2026-33597?

CVE-2026-33597 is a low-severity vulnerability in Powerdns Dnsdist, classified under Improper Encoding or Escaping of Output. CVSS score: 3.7/10. Published 2026-04-22.

How severe is CVE-2026-33597?

Low severity. CVSS v3 base score is 3.7 out of 10.

Vulnerability in Powerdns Dnsdist

CVE-2026-33597

PRSD detection denial of service

EPSS: 0.003 (27.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Powerdns Dnsdist — versions 1.9.0, 2.0.0

Weakness classification (CWE)

CWE-116 — Improper Encoding or Escaping of Output

References

security@open-xchange.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-33597?: CVE-2026-33597 is a low-severity vulnerability in Powerdns Dnsdist, classified under Improper Encoding or Escaping of Output. CVSS score: 3.7/10. Published 2026-04-22.
How severe is CVE-2026-33597?: Low severity. CVSS v3 base score is 3.7 out of 10.