4.3

CVE-2026-0397: powerdns dnsdist

CVSS: 4.3v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-0397DEBIAN-CVE-2026-0397
Published 31-03-2026Last modified 31-03-2026
Open JSON

Vulnerability summary

CVE-2026-0397 is a medium (CVSS 4.3) vulnerability in powerdns dnsdist. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.8% of scored vulnerabilities.

Overall risk
17/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
OPENSUSE-SU-2026:21015-1SUSE-SU-2026:1618-1SUSE-SU-2026:22319-1

Timeline

  1. 31-03-2026
    PublishedVulnerability first disclosed.
  2. 31-03-2026
    Last modifiedVulnerability information updated.

Description

When the internal webserver is enabled (default is disabled), an attacker might be able to trick an administrator logged to the dashboard into visiting a malicious website and extract information about the running configuration from the dashboard. The root cause of the issue is a misconfiguration of the Cross-Origin Resource Sharing (CORS) policy.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

0.00 pp

From 0.16% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.16%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • dnsdistAll versions (No fix recorded) | < 1.9.14-0+deb13u1 | < 2.0.3-1
Powerdns1 product
  • dnsdist≥ 1.9.0, < 1.9.12 | ≥ 2.0.0, < 2.0.3
Ubuntu1 product
  • dnsdistAll versions (No fix recorded)

3 vendors · 3 products

References

5 links