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CVE-2026-40011

Prometheus denial of service via crafted DNS queries

Published: Jun 25, 2026Updated: Jun 25, 2026 Sources: CVE List NVDCWE-116
3.7LOW
NVD MITRE
EPSS Score
0.2%
Top 95.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
OpenVAS

Description

An attacker sending a large number of crafted DNS queries might be able to trigger a dynamic block being inserted with a value causing invalid output to be produced in the prometheus endpoint. The prometheus endpoint will then be rejected by the scraper until the dynamic block expires.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-116

Affected Products

PowerDNS
oss-project·DKaka powerdns authoritative, powerdns recursor, dnsdist
DNSdistOn-prem
Networking Infrastructure / dns-dhcp-ntp

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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References

https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-09.html
dnsdist.org

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